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

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