Have been playing with ipv6 RA , RS. I am sending an RA every 200 secs, with router lifetime 1800 s, reachable 0s, retransmit 0s.The VM which is getting RA adds my router link local to the default routers list with lifetime as 1800s, it refreshes the router entry few times as it receives RA every 200s. But after sometime it stops refreshing the default router list. Router Advertisement:13:24:23.685883 01:01:01:01:01:01 > 33:33:ff:00:00:00, ethertype IPv6 (0x86dd), length 78: (hlim 255, next-header ICMPv6 (58) payload length: 24) fe80::301:1ff:fe01:101 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 24        hop limit 64, Flags [none], pref medium, router lifetime 1800s, reachable time 0ms, retrans time 0ms          source link-address option (1), length 8 (1): 01:01:01:01:01:01            0x0000:  0101 0101 0101Default routers list:root@el7-test:~/nfs/ws/vms# ip -6 route fe80::/64 dev vm1-veth0  proto kernel  metric 256 default via fe80::301:1ff:fe01:101 dev vm1-veth0  proto ra  metric 1024  expires 459secAm I missing something ?, tried different value of hoplimit, lifetime. Doesnt seem to work.Am trying this on a centos 7 vm.
IPv6 RA does not refresh default router entry
networking;ipv6;router;arp