[TBD]ARP and GARP

Linux way to add static ARP

Note that M flag in ARP entry tells that ARP entry is permanent

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root@minikube:~/personal# arp -n

Address HWtype HWaddress Flags Mask Iface

172.17.0.2 ether 02:42:ac:11:00:02 C docker0

10.106.166.100 (incomplete) eth0

172.17.0.3 ether 02:42:ac:11:00:03 C docker0

10.106.166.1 ether 00:de:fb:97:92:41 C eth0

root@minikube:~/personal# arp -s 172.17.0.4 02:42:ac:11:00:04

root@minikube:~/personal# arp -n

Address HWtype HWaddress Flags Mask Iface

172.17.0.4 ether 02:42:ac:11:00:04 CM docker0

172.17.0.2 ether 02:42:ac:11:00:02 C docker0

10.106.166.100 (incomplete) eth0

172.17.0.3 ether 02:42:ac:11:00:03 C docker0

10.106.166.1 ether 00:de:fb:97:92:41 C eth0

root@minikube:~/personal# arp -a | grep PERM

? (172.17.0.4) at 02:42:ac:11:00:04 [ether] PERM on docker0

root@minikube:~/personal#

Useful link: https://www.network-builders.com/threads/arp-command-output.57988/

Reference

https://www.linuxnix.com/linux-arp-command-explained-with-examples/

https://www.networkworld.com/article/2750342/it-management/checking-your-arp-entries.html