Problems with BGP routes on FRR 10.0-01

[cliff-ha]

Description

After upgrading FRR from version 9.1 to version 10.0-01, we have problems with routes not being installed correctly on the server. As soon as we downgrade the FRR version everything start working again. We have multiple interfaces on the server (eth0,eth1,eth2), the BGP peers is on eth1 and eth2, and it is receiving the same routes on the two interfaces, but the routes is being installed as if they were received on eth0:

Routing entry for 100.64.1.68/32
  Known via "bgp", distance 200, metric 0, best
  Last update 00:12:29 ago
    100.64.1.248 (recursive), weight 1
  *   10.0.9.193, via eth0, weight 1
    100.64.1.250 (recursive), weight 1
      10.0.9.193, via eth0 (duplicate nexthop removed), weight 1

BGP routing table entry for 100.64.1.68/32, version 33
Paths: (2 available, best #2, table default)
  Not advertised to any peer
  Local
    100.64.1.250 (metric 100) from 100.64.1.250 (195.191.143.22)
      Origin IGP, localpref 100, valid, internal, multipath
      Originator: 195.191.143.22, Cluster list: 195.191.143.10
      Last update: Wed May 29 10:19:09 2024
  Local
    100.64.1.248 (metric 100) from 100.64.1.248 (195.191.143.22)
      Origin IGP, localpref 100, valid, internal, multipath, best (Neighbor IP)
      Originator: 195.191.143.22, Cluster list: 195.191.143.10
      Last update: Wed May 29 10:18:46 2024

eth1            up      default         100.64.1.251/31
eth2            up      default         100.64.1.249/31

With ipv6 the routes is just marked as invalid because of the ip being inaccessible even when the peer ip is a direct neighbor.

Version

FRRouting 10.0 (#serverName) on Linux(5.14.0-427.18.1.el9_4.x86_64).
Copyright 1996-2005 Kunihiro Ishiguro, et al.
configured with:
    '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--disable-dependency-tracking' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sbindir=/usr/lib/frr' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-static' '--disable-werror' '--enable-multipath=256' '--enable-vtysh' '--enable-ospfclient' '--enable-ospfapi' '--enable-rtadv' '--enable-ldpd' '--enable-pimd' '--enable-pim6d' '--enable-pbrd' '--enable-nhrpd' '--enable-eigrpd' '--enable-babeld' '--enable-vrrpd' '--enable-user=frr' '--enable-group=frr' '--enable-vty-group=frrvty' '--enable-fpm' '--enable-watchfrr' '--disable-bgp-vnc' '--enable-isisd' '--enable-rpki' '--enable-bfdd' '--enable-pathd' '--enable-snmp' 'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu' 'PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig' 'CC=gcc' 'CXX=g++' 'LT_SYS_LIBRARY_PATH=/usr/lib64:'

How to reproduce

Have multiple interfaces on the server and then have BGP peers on eth1 and eth2.

Expected behavior

Routes being installed on the interfaces it is received

Actual behavior

routes is installed as received on eth0

Additional context

No response

Checklist

• [X] I have searched the open issues for this bug.
• [X] I have not included sensitive information in this report.