Symptom
Segment routing Uloop tunnel interface not deleted from default RIB post Uloop convergence & it is showing as UNKNOWN interface next-hop since it was deleted from IOSP RIB & IM database.
RP/0/RSP1/CPU0:Router-1#sh route 10.255.68.28
Tue Oct 4 13:36:19.806 AEDT
Routing entry for 10.255.68.28/32
Known via "ospf 1", distance 110, metric 55, labeled SR, type intra area
Installed Oct 4 03:28:07.389 for 10:08:13
Routing Descriptor Blocks
10.255.107.60, from 10.255.68.28, via Bundle-Ether1, Protected, ECMP-Backup (Local-LFA)
Route metric is 55
10.255.107.62, from 10.255.68.28, via Bundle-Ether10, Protected, ECMP-Backup (Local-LFA)
Route metric is 55
directly connected, via Unknown, Protected <<<<<<<<<<<<<<
Route metric is 65625
No advertising protos.
Conditions
Segment routing Uloop should be enabled and when Uloop is triggered by a networking event OSPF has computed an SR uloop path. SR uloop paths should be reachable via tunnels.
Workaround
clear the route entry from RIB.
