Hello, all;
I've been having some issues getting bgpd to announce IPv6 routes,
apologies for the dumb question in advance.
I've setup rad(8) and bgpd(8) on an OpenBSD machine. bgpd(8) is
sending routes over to some neighbors (routes such as
fd80::fce1:baff:fea6:bf3a) while rad(8) is sending prefix information
for hosts to auto assign themselves some address (such as
2620:ba:6000:3:21db:f1bb:8ad9:21d6). Below is my routing table just for
reference
Routing tables
Internet6:
Destination Gateway
Flags Refs Use Mtu Prio Iface
::/96 ::1
UGRS 0 0 32768 8 lo0
::1 ::1
UHhl 11 6049 32768 1 lo0
::ffff:0.0.0.0/96 ::1
UGRS 0 0 32768 8 lo0
2002::/24 ::1
UGRS 0 0 32768 8 lo0
2002:7f00::/24 ::1
UGRS 0 0 32768 8 lo0
2002:e000::/20 ::1
UGRS 0 0 32768 8 lo0
2002:ff00::/24 ::1
UGRS 0 0 32768 8 lo0
2620:ba:6000:3:21db:f1bb:8ad9:21d6 56:af:97:0f:66:6e
UHL 0 29 - 4 vport0
2620:ba:6000:3:58d2:48ff:fee6:270a 56:af:97:0f:66:6e
UHL 0 12 - 4 vport0
2620:ba:6000:3:6390:a68d:985b:167e 56:af:97:0f:66:6e
UHL 0 2 - 4 vport0
2620:ba:6000:3:fbc7:2dc3:5415:472f 56:af:97:0f:66:6e
UHL 0 2 - 4 vport0
fd80::/64 fd80::fce1:baff:fe6e:d685
UCn 2 0 - 4 wg0
fd80::fce1:baff:fe6e:d685 wg0
UHl 0 53176 - 1 wg0
fd80::fce1:baff:fea6:bf3a link#0
UHc 0 18780 - 3 wg0
fd80::fce1:baff:fed1:1740 link#0
UHc 0 17267 - 3 wg0
fe80::/10 ::1
UGRS 0 2 32768 8 lo0
fec0::/10 ::1
UGRS 0 0 32768 8 lo0
fe80::1%lo0 fe80::1%lo0
UHl 0 0 32768 1 lo0
fe80::%vport0/64
fe80::fce1:baff:fed0:1651%vport0 UCn 6 13 -
4 vport0
fe80::f2:ef53:e182:f2b9%vport0 ca:17:26:5a:6c:4c
UHLc 0 55 - 3 vport0
fe80::c9c:cf47:45fd:c478%vport0 6c:7e:67:ba:f4:bf
UHLc 0 60 - 3 vport0
fe80::102e:8ee8:1221:17cd%vport0 32:b3:c9:b3:5b:da
UHLc 0 47 - 3 vport0
fe80::1425:7ad2:8b72:50ae%vport0 00:e0:4c:6a:01:c7
UHLc 0 62 - 3 vport0
fe80::14d2:ffbf:d222:2a3c%vport0 56:af:97:0f:66:6e
UHLc 0 144 - 3 vport0
fe80::58d2:48ff:fee6:270a%vport0 56:af:97:0f:66:6e
UHLc 0 75 - 3 vport0
fe80::fce1:baff:fed0:1651%vport0 fe:e1:ba:d0:16:51
UHLl 0 147 - 1 vport0
fe80::%mgre0/64
fe80::1efd:8ff:fe7e:6b38%mgre0 UCn 0 0 -
4 mgre0
fe80::1efd:8ff:fe7e:6b38%mgre0 mgre0
UHl 0 74 - 1 mgre0
fe80::9ab7:85ff:fe00:3726%mgre0 fd80::fce1:baff:fea6:bf3a
UHS 0 2398949 - 8 mgre0
fe80::9ab7:85ff:fe00:3727%mgre0 fd80::fce1:baff:fed1:1740
UHS 0 556106 - 8 mgre0
bgpd(8) is configued to advertise all connected and static routes,
however bgpd(8) only advertises routes that are connected to the wg0
interface and none that are connected on the vport0 interface. Below is
the output of `bgpctl show fib connected inet6` for reference.
flags prio destination gateway
C 1 ::1/128 link#8
C 4 fd80::/64 link#11
C 1 fd80::fce1:baff:fe6e:d685/128 link#11
C 3 fd80::fce1:baff:fea6:bf3a/128 link#11
C 3 fd80::fce1:baff:fed1:1740/128 link#11
C 4 fe80::%vport0/64 link#10
C 4 fe80::%mgre0/64 link#12
C 1 fe80::1%lo0/128 link#8
CN 1 fe80::1efd:8ff:fe7e:6b38%mgre0/128 link#12
C 8 fe80::9ab7:85ff:fe00:3726%mgre0/128 link#12
C 8 fe80::9ab7:85ff:fe00:3727%mgre0/128 link#12
C 4 ff01::%lo0/32 link#8
C 4 ff01::%vport0/32 link#10
C 4 ff01::%wg0/32 link#11
C 4 ff01::%mgre0/32 link#12
C 4 ff02::%lo0/32 link#8
C 4 ff02::%vport0/32 link#10
C 4 ff02::%wg0/32 link#11
C 4 ff02::%mgre0/32 link#12
As far as I can tell bgpd(8) is configured correctly, and there are no
anomalies when it comes to routes. Below is a sample of my bgpd(8)
configuration for reference.
AS 10261
neighbor fe80::9ab7:85ff:fe00:3726%mgre0 {
remote-as 10261
}
neighbor fe80::9ab7:85ff:fe00:3727%mgre0 {
remote-as 10261
}
network inet6 priority 4
network inet6 connected
network inet6 static
allow from ibgp
allow to ibgp set { nexthop fe80::1efd:8ff:fe7e:6b38%mgre0 prepend-self 1 }
Am I missing something? Am I making some assumption when it comes to how
bgpd(8) works with IPv6 addresses? Thank you in advance.
Ben Raskin
