一、tun/tap（虚拟网卡）
TUN/TAP设备浅析(一) – 原理浅析 - 简书 (jianshu.com)
(3条消息) Linux-虚拟网络设备-tun/tap_sld880311的专栏-CSDN博客_linux tap
理解Linux虚拟网卡设备tun/tap的一切 | 骏马金龙 (junmajinlong.com)
Linux-虚拟网络设备-tun/tap_sld880311的专栏-CSDN博客_linux tap
1、特点
TUN 和 TAP 设备是 Linux 内核虚拟网络设备，纯软件实现。
TUN（TUNnel）设备模拟网络层设备，处理三层报文如 IP 报文。TAP 设备模拟链路层设备，处理二层报文，比如以太网帧。
2、使用方法
Linux 提供了一些命令行程序方便我们来创建持久化的tun/tap设备，但是如果没有应用程序打开对应的文件描述符，tun/tap的状态一直会是DOWN，还好的是这并不会影响我们把它当作普通网卡去使用。
onlylove@ubuntu:~$ ip tuntap help
Usage: ip tuntap { add | del | show | list | lst | help } [ dev PHYS_DEV ]
[ mode { tun | tap } ] [ user USER ] [ group GROUP ]
[ one_queue ] [ pi ] [ vnet_hdr ] [ multi_queue ] [ name NAME ]
Where: USER := { STRING | NUMBER }
GROUP := { STRING | NUMBER }
onlylove@ubuntu:~$
ip tuntap add dev tap0 mode tap
ip tuntap add dev tun0 mode tun
ip tuntap del dev tap0 mode tap
ip tuntap del dev tun0 mode tun
3、示例
1、tap（二层网络设备）
sudo ip tuntap add dev tap0 mode tap
sudo ip link set dev tap0 up
sudo ip address add dev tap0 192.168.1.128/24
ip route show
sudo ip tuntap del dev tap0 mode tap
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 13906 bytes 7451463 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5427 bytes 729793 (729.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$ clear
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 13988 bytes 7457366 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5470 bytes 734415 (734.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$ clear
onlylove@ubuntu:~$
onlylove@ubuntu:~$
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14031 bytes 7460576 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5498 bytes 738063 (738.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$ ip route show
default via 192.168.6.2 dev ens33 proto static metric 100
169.254.0.0/16 dev ens33 scope link metric 1000
192.168.6.0/24 dev ens33 proto kernel scope link src 192.168.6.129 metric 100
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip tuntap add dev tap0 mode tap
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14098 bytes 7465506 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5535 bytes 742715 (742.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14125 bytes 7467546 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5555 bytes 745387 (745.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 52:19:9d:b8:18:d7 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link set dev tap0 up
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14165 bytes 7470368 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5573 bytes 748423 (748.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2665 bytes 155516 (155.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2665 bytes 155516 (155.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 52:19:9d:b8:18:d7 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip address add dev tap0 192.168.1.128/24
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14263 bytes 7478478 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5648 bytes 756811 (756.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2675 bytes 156336 (156.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2675 bytes 156336 (156.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.1.128 netmask 255.255.255.0 broadcast 0.0.0.0
ether 52:19:9d:b8:18:d7 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ip route show
default via 192.168.6.2 dev ens33 proto static metric 100
169.254.0.0/16 dev ens33 scope link metric 1000
192.168.1.0/24 dev tap0 proto kernel scope link src 192.168.1.128 linkdown
192.168.6.0/24 dev ens33 proto kernel scope link src 192.168.6.129 metric 100
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip tuntap del dev tap0 mode tap
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14317 bytes 7482917 (7.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 5684 bytes 761877 (761.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2693 bytes 158036 (158.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2693 bytes 158036 (158.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
2、tun（三层网络设备）
sudo ip tuntap add dev tun0 mode tun
sudo ip link set dev tun0 up
sudo ip address add dev tun0 192.168.1.128/24
ip route show
sudo ip tuntap del dev tun0 mode tun
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 14987 bytes 7532982 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6118 bytes 813370 (813.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2735 bytes 162084 (162.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2735 bytes 162084 (162.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ip route show
default via 192.168.6.2 dev ens33 proto static metric 100
169.254.0.0/16 dev ens33 scope link metric 1000
192.168.6.0/24 dev ens33 proto kernel scope link src 192.168.6.129 metric 100
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip tuntap add dev tun0 mode tun
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15099 bytes 7541904 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6192 bytes 821668 (821.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2737 bytes 162256 (162.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2737 bytes 162256 (162.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15127 bytes 7543974 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6209 bytes 824160 (824.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2737 bytes 162256 (162.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2737 bytes 162256 (162.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4240<POINTOPOINT,NOARP,MULTICAST> mtu 1500
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link set dev tun0 up
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15160 bytes 7546406 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6234 bytes 827716 (827.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2737 bytes 162256 (162.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2737 bytes 162256 (162.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4241<UP,POINTOPOINT,NOARP,MULTICAST> mtu 1500
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip address add dev tun0 192.168.1.128/24
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15194 bytes 7549068 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6255 bytes 831098 (831.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2745 bytes 162904 (162.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2745 bytes 162904 (162.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4241<UP,POINTOPOINT,NOARP,MULTICAST> mtu 1500
inet 192.168.1.128 netmask 255.255.255.0 destination 192.168.1.128
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ip route show
default via 192.168.6.2 dev ens33 proto static metric 100
169.254.0.0/16 dev ens33 scope link metric 1000
192.168.1.0/24 dev tun0 proto kernel scope link src 192.168.1.128 linkdown
192.168.6.0/24 dev ens33 proto kernel scope link src 192.168.6.129 metric 100
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15229 bytes 7551916 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6278 bytes 834964 (834.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2751 bytes 163632 (163.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2751 bytes 163632 (163.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tun0: flags=4241<UP,POINTOPOINT,NOARP,MULTICAST> mtu 1500
inet 192.168.1.128 netmask 255.255.255.0 destination 192.168.1.128
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip tuntap del dev tun0 mode tun
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 15269 bytes 7555038 (7.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6302 bytes 838604 (838.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2759 bytes 164280 (164.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2759 bytes 164280 (164.2 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
二、veth
Linux虚拟网络设备之veth - SegmentFault 思否
Linux-虚拟网络设备-veth pair_sld880311的专栏-CSDN博客_linux veth
1、veth设备的特点
1、veth和其它的网络设备都一样，一端连接的是内核协议栈。
2、veth设备是成对出现的，另一端两个设备彼此相连。
3、一个设备收到协议栈的数据发送请求后，会将数据发送到另一个设备上去。
2、使用方法
onlylove@ubuntu:~$ ip link help
Usage: ip link add [link DEV] [ name ] NAME
[ txqueuelen PACKETS ]
[ address LLADDR ]
[ broadcast LLADDR ]
[ mtu MTU ] [index IDX ]
[ numtxqueues QUEUE_COUNT ]
[ numrxqueues QUEUE_COUNT ]
type TYPE [ ARGS ]
ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]
ip link set { DEVICE | dev DEVICE | group DEVGROUP }
[ { up | down } ]
[ type TYPE ARGS ]
[ arp { on | off } ]
[ dynamic { on | off } ]
[ multicast { on | off } ]
[ allmulticast { on | off } ]
[ promisc { on | off } ]
[ trailers { on | off } ]
[ carrier { on | off } ]
[ txqueuelen PACKETS ]
[ name NEWNAME ]
[ address LLADDR ]
[ broadcast LLADDR ]
[ mtu MTU ]
[ netns { PID | NAME } ]
[ link-netns NAME | link-netnsid ID ]
[ alias NAME ]
[ vf NUM [ mac LLADDR ]
[ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]
[ rate TXRATE ]
[ max_tx_rate TXRATE ]
[ min_tx_rate TXRATE ]
[ spoofchk { on | off} ]
[ query_rss { on | off} ]
[ state { auto | enable | disable} ] ]
[ trust { on | off} ] ]
[ node_guid { eui64 } ]
[ port_guid { eui64 } ]
[ { xdp | xdpgeneric | xdpdrv | xdpoffload } { off |
object FILE [ section NAME ] [ verbose ] |
pinned FILE } ]
[ master DEVICE ][ vrf NAME ]
[ nomaster ]
[ addrgenmode { eui64 | none | stable_secret | random } ]
[ protodown { on | off } ]
[ gso_max_size BYTES ] | [ gso_max_segs PACKETS ]
ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]
ip link xstats type TYPE [ ARGS ]
ip link afstats [ dev DEVICE ]
ip link property add dev DEVICE [ altname NAME .. ]
ip link property del dev DEVICE [ altname NAME .. ]
ip link help [ TYPE ]
TYPE := { vlan | veth | vcan | vxcan | dummy | ifb | macvlan | macvtap |
bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |
gre | gretap | erspan | ip6gre | ip6gretap | ip6erspan |
vti | nlmon | team_slave | bond_slave | bridge_slave |
ipvlan | ipvtap | geneve | vrf | macsec | netdevsim | rmnet |
xfrm }
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ip link help veth
Usage: ip link <options> type veth [peer <options>]
To get <options> type 'ip link add help'
onlylove@ubuntu:~$
3、示例
sudo ip link add veth0 type veth peer name veth1
sudo ip addr add 192.168.2.11/24 dev veth0
sudo ip addr add 192.168.2.5/24 dev veth1
sudo ip link set veth0 up
sudo ip link set veth1 up
sudo ip link delete veth0 type veth peer name veth1
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 22931 bytes 15105317 (15.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8310 bytes 1051491 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2961 bytes 181332 (181.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2961 bytes 181332 (181.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link add veth0 type veth peer name veth1
[sudo] password for onlylove:
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 22984 bytes 15109265 (15.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8340 bytes 1055343 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2961 bytes 181332 (181.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2961 bytes 181332 (181.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 23012 bytes 15111335 (15.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8357 bytes 1057873 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2961 bytes 181332 (181.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2961 bytes 181332 (181.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 1a:c5:9b:ac:82:a2 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth1: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether fa:90:44:97:74:93 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip addr add 192.168.2.11/24 dev veth0
onlylove@ubuntu:~$ sudo ip addr add 192.168.2.5/24 dev veth1
onlylove@ubuntu:~$ sudo ip link set veth0 up
onlylove@ubuntu:~$ sudo ip link set veth1 up
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 23071 bytes 15116421 (15.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8402 bytes 1063497 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3001 bytes 184572 (184.5 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3001 bytes 184572 (184.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.2.11 netmask 255.255.255.0 broadcast 0.0.0.0
inet6 fe80::18c5:9bff:feac:82a2 prefixlen 64 scopeid 0x20<link>
ether 1a:c5:9b:ac:82:a2 txqueuelen 1000 (Ethernet)
RX packets 25 bytes 3011 (3.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 11 bytes 1196 (1.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
veth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.2.5 netmask 255.255.255.0 broadcast 0.0.0.0
inet6 fe80::f890:44ff:fe97:7493 prefixlen 64 scopeid 0x20<link>
ether fa:90:44:97:74:93 txqueuelen 1000 (Ethernet)
RX packets 11 bytes 1196 (1.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 25 bytes 3011 (3.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link delete veth0 type veth peer name veth1
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 23106 bytes 15119275 (15.1 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8425 bytes 1067607 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3017 bytes 185868 (185.8 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3017 bytes 185868 (185.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
三、bridge（虚拟交换机）
Linux虚拟网络设备之bridge(桥) - SegmentFault 思否
Linux-虚拟网络设备-LinuxBridge_sld880311的专栏-CSDN博客_linux 虚拟交换机
1、特点
bridge是一个虚拟网络设备，所以具有网络设备的特征，可以配置IP、MAC地址等；其次，bridge是一个虚拟交换机，和物理交换机有类似的功能。
2、使用方法
onlylove@ubuntu:~$ ip link help
Usage: ip link add [link DEV] [ name ] NAME
[ txqueuelen PACKETS ]
[ address LLADDR ]
[ broadcast LLADDR ]
[ mtu MTU ] [index IDX ]
[ numtxqueues QUEUE_COUNT ]
[ numrxqueues QUEUE_COUNT ]
type TYPE [ ARGS ]
ip link delete { DEVICE | dev DEVICE | group DEVGROUP } type TYPE [ ARGS ]
ip link set { DEVICE | dev DEVICE | group DEVGROUP }
[ { up | down } ]
[ type TYPE ARGS ]
[ arp { on | off } ]
[ dynamic { on | off } ]
[ multicast { on | off } ]
[ allmulticast { on | off } ]
[ promisc { on | off } ]
[ trailers { on | off } ]
[ carrier { on | off } ]
[ txqueuelen PACKETS ]
[ name NEWNAME ]
[ address LLADDR ]
[ broadcast LLADDR ]
[ mtu MTU ]
[ netns { PID | NAME } ]
[ link-netns NAME | link-netnsid ID ]
[ alias NAME ]
[ vf NUM [ mac LLADDR ]
[ vlan VLANID [ qos VLAN-QOS ] [ proto VLAN-PROTO ] ]
[ rate TXRATE ]
[ max_tx_rate TXRATE ]
[ min_tx_rate TXRATE ]
[ spoofchk { on | off} ]
[ query_rss { on | off} ]
[ state { auto | enable | disable} ] ]
[ trust { on | off} ] ]
[ node_guid { eui64 } ]
[ port_guid { eui64 } ]
[ { xdp | xdpgeneric | xdpdrv | xdpoffload } { off |
object FILE [ section NAME ] [ verbose ] |
pinned FILE } ]
[ master DEVICE ][ vrf NAME ]
[ nomaster ]
[ addrgenmode { eui64 | none | stable_secret | random } ]
[ protodown { on | off } ]
[ gso_max_size BYTES ] | [ gso_max_segs PACKETS ]
ip link show [ DEVICE | group GROUP ] [up] [master DEV] [vrf NAME] [type TYPE]
ip link xstats type TYPE [ ARGS ]
ip link afstats [ dev DEVICE ]
ip link property add dev DEVICE [ altname NAME .. ]
ip link property del dev DEVICE [ altname NAME .. ]
ip link help [ TYPE ]
TYPE := { vlan | veth | vcan | vxcan | dummy | ifb | macvlan | macvtap |
bridge | bond | team | ipoib | ip6tnl | ipip | sit | vxlan |
gre | gretap | erspan | ip6gre | ip6gretap | ip6erspan |
vti | nlmon | team_slave | bond_slave | bridge_slave |
ipvlan | ipvtap | geneve | vrf | macsec | netdevsim | rmnet |
xfrm }
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ip link help bridge
Usage: ... bridge [ fdb_flush ]
[ forward_delay FORWARD_DELAY ]
[ hello_time HELLO_TIME ]
[ max_age MAX_AGE ]
[ ageing_time AGEING_TIME ]
[ stp_state STP_STATE ]
[ priority PRIORITY ]
[ group_fwd_mask MASK ]
[ group_address ADDRESS ]
[ vlan_filtering VLAN_FILTERING ]
[ vlan_protocol VLAN_PROTOCOL ]
[ vlan_default_pvid VLAN_DEFAULT_PVID ]
[ vlan_stats_enabled VLAN_STATS_ENABLED ]
[ vlan_stats_per_port VLAN_STATS_PER_PORT ]
[ mcast_snooping MULTICAST_SNOOPING ]
[ mcast_router MULTICAST_ROUTER ]
[ mcast_query_use_ifaddr MCAST_QUERY_USE_IFADDR ]
[ mcast_querier MULTICAST_QUERIER ]
[ mcast_hash_elasticity HASH_ELASTICITY ]
[ mcast_hash_max HASH_MAX ]
[ mcast_last_member_count LAST_MEMBER_COUNT ]
[ mcast_startup_query_count STARTUP_QUERY_COUNT ]
[ mcast_last_member_interval LAST_MEMBER_INTERVAL ]
[ mcast_membership_interval MEMBERSHIP_INTERVAL ]
[ mcast_querier_interval QUERIER_INTERVAL ]
[ mcast_query_interval QUERY_INTERVAL ]
[ mcast_query_response_interval QUERY_RESPONSE_INTERVAL ]
[ mcast_startup_query_interval STARTUP_QUERY_INTERVAL ]
[ mcast_stats_enabled MCAST_STATS_ENABLED ]
[ mcast_igmp_version IGMP_VERSION ]
[ mcast_mld_version MLD_VERSION ]
[ nf_call_iptables NF_CALL_IPTABLES ]
[ nf_call_ip6tables NF_CALL_IP6TABLES ]
[ nf_call_arptables NF_CALL_ARPTABLES ]
Where: VLAN_PROTOCOL := { 802.1Q | 802.1ad }
onlylove@ubuntu:~$
3、示例
sudo ip link add name br0 type bridge
sudo ip link set br0 up
sudo bridge link
sudo ip link delete name br0 type bridge
sudo ip link set dev xxx master br0
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 17478 bytes 7716741 (7.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7699 bytes 992070 (992.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2932 bytes 178733 (178.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2932 bytes 178733 (178.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link add name br0 type bridge
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 17506 bytes 7718851 (7.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7719 bytes 994952 (994.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2932 bytes 178733 (178.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2932 bytes 178733 (178.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
br0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 4a:dd:f2:e6:a5:ba txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 17523 bytes 7720059 (7.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7729 bytes 996822 (996.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2932 bytes 178733 (178.7 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2932 bytes 178733 (178.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link set br0 up
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::48dd:f2ff:fee6:a5ba prefixlen 64 scopeid 0x20<link>
ether 4a:dd:f2:e6:a5:ba txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1954 (1.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 17558 bytes 7722787 (7.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7754 bytes 1000380 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2940 bytes 179381 (179.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2940 bytes 179381 (179.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo bridge link
onlylove@ubuntu:~$
onlylove@ubuntu:~$ sudo ip link delete name br0 type bridge
onlylove@ubuntu:~$
onlylove@ubuntu:~$ ifconfig -a
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.6.129 netmask 255.255.255.0 broadcast 192.168.6.255
inet6 fe80::20c:29ff:feb8:de3b prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:b8:de:3b txqueuelen 1000 (Ethernet)
RX packets 17609 bytes 7726705 (7.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 7787 bytes 1004970 (1.0 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2948 bytes 180029 (180.0 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2948 bytes 180029 (180.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
onlylove@ubuntu:~$
四、OpenvSwitch
Linux-虚拟网络设备-OpenvSwitch(持续更新)_sld880311的专栏-CSDN博客_linux openvswitch
|