ip

• ip neigh 查看 arp table

• ip route get <ip>: ask the kernel to report the route it would use to send a packet to the specified address (也是 gateway)

• ip link: MAC address

  • 网桥 ip link add/delete mynet0 type bridge

  • 混杂模式 ip link set <interface> promisc on/off

• ip address

  • ip address add/change/delete dev <interface> <addr>

• ip route list: display all the IP addresses with their device names that are currently available

• ip maddr show ens33 主机网卡上 MAC 地址，使用 macvlan 主机网卡会有多个 MAC 地址

• ip netns 操作网络命名空间

  • ip netns add <ns-name>

  • ip netns exec <ns-name> <command>

  • ip netns help