Hi,

Has anyone encountered this before ?

Neighbor            AS    MsgRcvd    MsgSent  OutQ Up/Down  State/PrfRcvd
EXT-V6-R2           65515         50         40     0 00:02:55 Active
EXT-V4-R2           65515         38         37     0 00:27:42      1
After approx just over 2 minutes, the V6 flaps, bu the V4 remains rock solid.

The boxes are sitting right next to each other, connected over an OpenBSD LACP 
trunk.

I have made the pf rules as simple as possible:

table <my_router_interfaces> counters {self}
table <bsd_friends> counters {192.0.2.1,2001:DB8::1}
pass in quick proto {tcp,udp,icmp} from <bsd_friends> to <my_router_interfaces> 
modulate state
pass out quick proto {tcp,udp,icmp} from <my_router_interfaces> to 
<bsd_friends> modulate state

The bgpd config is also simple:

MY_ROUTER_ID_V4="192.0.2.2"
MY_ROUTER_ID_V6="2001:DB8::2"
MY_ASN="64515"
AS $MY_ASN
router-id $MY_ROUTER_ID_V4
rde med compare always
network inet connected
network inet6 connected
group its_internal_v4 {
        remote-as 65515
        announce IPv6 none
        neighbor 192.0.2.1 {
                local-address 192.0.2.2
                descr "EXT-V4-R2"
        }
}
group its_internal_v6 {
        remote-as 65515
        announce IPv6 none
        neighbor 2001:DB8::1 {
                local-address 2001:DB8::2
                descr "EXT-V6-R2"
        }
}


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