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FRR 7.3.1-0 stale connected route
Open, Requires assessmentPublicBUG

Description

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.

Details

Difficulty level
Hard (possibly days)
Version
1.3-rolling-202005301150
Why the issue appeared?
Other
Is it a breaking change?
Unspecified (possibly destroys the router)

Event Timeline

daniil created this task.May 30 2020, 1:08 PM
daniil changed Is it a breaking change? from Behavior change to Unspecified (possibly destroys the router).
daniil changed Why the issue appeared? from Will be filled on close to Other.