Hi,
I use bird 2.0.7 on FreeBSD 12.1 for 3 routers with bgp and ospf/ospf v3.
This is my weathermap : https://librenms.securmail.fr/weathermap/ (to
help for understand my network architecture)
I have a configuration for my internal subnet :
protocol ospf ospf_ipv4_internal {
ipv4 {
import keep filtered;
import limit 200 action block;
import filter {
if (net ~ [ 10.0.0.0/8+, 172.16.0.0/12+,
192.168.0.0/16+ ]) then {
accept;
}
else {
reject;
}
};
export none;
};
area 0.0.0.0 {
interface "tap0";
};
};
The same for IPv6 :
protocol ospf v3 ospf_ipv6_internal {
ipv6 {
import all;
import keep filtered;
import limit 200 action block;
import filter {
if (net ~ [ ::/0 ]) then {
reject;
}
if (net ~ [ fd00:208::/32+ ]) then accept;
};
export none;
};
area 0.0.0.0 {
interface "tap0";
};
};
But, sometimes, ospf_ipv4_internal on 2 routers (always the same) lost
routes learn by this ospf configuration.
On the router who has the routes (on iFog router) :
bird> show route all protocol ospf_ipv4_internal
Table master4:
192.168.0.0/24 unicast [ospf_ipv4_internal 06:16:20.781] E2
(150/10/64) [172.16.56.3]
via 172.16.56.3 on tap0
Type: OSPF-E2 univ
OSPF.metric1: 10
OSPF.metric2: 64
OSPF.tag: 0x00000000
OSPF.router_id: 172.16.56.3
172.16.55.0/24 unicast [ospf_ipv4_internal 06:16:14.779] I
(150/20) [172.16.55.7]
via 172.16.56.2 on tap0
Type: OSPF univ
OSPF.metric1: 20
OSPF.router_id: 172.16.55.7
172.16.56.0/24 unicast [ospf_ipv4_internal 06:01:36.079] I
(150/10) [193.148.249.128]
dev tap0
Type: OSPF univ
OSPF.metric1: 10
OSPF.router_id: 193.148.249.128
On the router who lost them (on Scipio router) :
bird> show route all protocol ospf_ipv4_internal
Table master4:
172.16.56.0/24 unicast [ospf_ipv4_internal 09:33:17.530] I
(150/10) [89.234.186.30]
dev tap0
Type: OSPF univ
OSPF.metric1: 10
OSPF.router_id: 89.234.186.30
On this router, in the log file i have this error :
2020-08-27 09:50:12.349 <ERR> ospf_ipv4_internal: Socket error on tap0:
Invalid argument
The configuration is the same between all routers.
I missed something but i don't understand what ^^
Can you help me on this?
Thanks
