Stale IP addresses remains in FRR routing table after removing from interface.
Reproduce the problem:
ip addr add 192.168.100.1/32 peer 192.168.100.100/32 dev eth5 show ip route 192.168.100.100 Routing entry for 192.168.100.100/32 Known via "connected", distance 0, metric 0, best Last update 00:01:23 ago * directly connected, eth5 ip addr del 192.168.100.1/32 peer 192.168.100.100/32 dev eth5 show ip route 192.168.100.100 Routing entry for 192.168.100.100/32 Known via "connected", distance 0, metric 0, best Last update 00:01:51 ago * directly connected, eth5
This problem occurs with the ipoe-server after closing the session when using unnumbered ip interfaces.