[FROG] FRR not adding kernel default route

[Felipe Arturo Polanco]

Hi,

I have a strange issue where FRR does not pull the kernel default route
into its routing table, it does accept any other static route that is not
0.0.0.0/0 into its table:

FRR routing table:

FRR03# show ip 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

C>* 1.10.1.3/32 is directly connected, lo, 00:58:38
C>* 192.168.17.0/24 is directly connected, ens37, 00:58:38
C>* 192.168.44.0/24 is directly connected, ens33, 00:58:38

Linux routing table:

[root at FRR03 ~]# ip route show
default via 192.168.44.2 dev ens33 proto static metric 100
192.168.17.0/24 dev ens37 proto kernel scope link src 192.168.17.137 metric
100
192.168.44.0/24 dev ens33 proto kernel scope link src 192.168.44.145

FRR show running output:

FRR03# sh run
Building configuration...

Current configuration:
!
frr version 4.1-dev-MyOwnFRRVersion
frr defaults traditional
hostname FRR03
log syslog
!
interface lo
 ip address 1.10.1.3/32
!
line vty
!
end

***
Adding static route in Linux
***

[root at FRR03 ~]# ip route add 172.16.25.0/24 via 192.168.44.2
[root at FRR03 ~]# vtysh
FRR03# show ip 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

C>* 1.10.1.3/32 is directly connected, lo, 01:01:15
K>* 172.16.25.0/24 [0/0] via 192.168.44.2, ens33, 00:00:05
C>* 192.168.17.0/24 is directly connected, ens37, 01:01:15
C>* 192.168.44.0/24 is directly connected, ens33, 01:01:15

Due to this issue FRR protocols cannot work correctly eg: BGP cannot peer
with a neighbor that is not on a directly connected network or added
statically.

Does anyone have an idea of what this could be?

Thanks,
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