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Bug #9668

closed

Running /etc/rc.newipsecdns breaks FRR BGP on VTI interfaces

Added by Chris Linstruth over 2 years ago. Updated about 2 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
IPsec
Target version:
Start date:
08/05/2019
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
Release Notes:
Affected Version:
2.4.4-p3
Affected Architecture:

Description

Running /etc/rc.newipsecdns breaks FRR BGP on VTI interfaces

Create a simple FRR BGP session across an IPsec VTI

Announce a route to the other side. 172.25.233.0/24 is our subject route.

Codes: K - kernel route, C - connected, S - static, R - RIP,
       O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
       T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
       F - PBR,
       > - selected route, * - FIB route

K>* 0.0.0.0/0 [0/0] via 172.25.228.1, vtnet1, 00:03:07
C>* 10.20.30.0/30 is directly connected, ipsec1000, 00:03:07
C>* 172.25.228.0/24 is directly connected, vtnet1, 00:03:07
B   172.25.233.0/24 [20/0] via 10.20.30.1, ipsec1000, 00:01:37
K>* 172.25.233.0/24 [0/0] via 10.20.30.1, ipsec1000, 00:03:07
C>* 172.25.234.0/24 is directly connected, vtnet0, 00:03:07
C>* 172.25.235.12/31 is directly connected, vtnet2, 00:03:07
BGP table version is 1, local router ID is 172.25.235.12, vrf id 0
Status codes:  s suppressed, d damped, h history, * valid, > best, = multipath,
               i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes:  i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 172.25.233.0/24  10.20.30.1               0             0 65000 i

Displayed  1 routes and 1 total paths

Run /etc/rc.newipsecdns on the side receiving the route. The routes are still received but are marked inactive and are not installed in the routing table.

Codes: K - kernel route, C - connected, S - static, R - RIP,
       O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
       T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
       F - PBR,
       > - selected route, * - FIB route

K>* 0.0.0.0/0 [0/0] via 172.25.228.1, vtnet1, 00:06:55
C>* 10.20.30.0/30 is directly connected, ipsec1000, 00:00:16
C>* 172.25.228.0/24 is directly connected, vtnet1, 00:06:55
K * 172.25.233.0/24 [0/0] via 10.20.30.1 inactive, 00:00:16
B   172.25.233.0/24 [20/0] via 10.20.30.1 inactive, 00:00:16
C>* 172.25.234.0/24 is directly connected, vtnet0, 00:06:55
C>* 172.25.235.12/31 is directly connected, vtnet2, 00:06:55
BGP table version is 1, local router ID is 172.25.235.12, vrf id 0
Status codes:  s suppressed, d damped, h history, * valid, > best, = multipath,
               i internal, r RIB-failure, S Stale, R Removed
Nexthop codes: @NNN nexthop's vrf id, < announce-nh-self
Origin codes:  i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 172.25.233.0/24  10.20.30.1               0             0 65000 i

Displayed  1 routes and 1 total paths

Restarting FRR seems to clear it.

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