Hi,
I recently updated some virtual machine hosting nodes to Debian Buster
from Stretch, and I'm having an interesting problem with IPv6 kernel
routes. My example uses 1.6.6 but 1.6.7 shows the same behaviour, so
I'm just wondering what I am missing. v4 is all working as expected.
I tried a bird6.conf from a machine still running Debian Stretch, and
that also did not import the kernel routes.
I've tried this on a test VM with bird 1.6.3 and kernel 4.9.0 and it
imports the routes as expected.
I've set up a test VM in the lab with the following bird6.conf:
--------------------------------------
root@os-test:~# grep -v ^# /etc/bird/bird6.conf
router id 198.51.100.1;
protocol kernel {
scan time 60;
learn;
device routes;
#import none;
import all;
}
protocol device {
scan time 60;
}
--------------------------------------
This is just the sample file with "learn", "import all" and "device
routes" added to the kernel protocol.
I have added a test kernel route:
root@os-test:~# route -6 add 2a03:9804::/64 gw 2a03:9802:1000:aa::1
I would expect to see this in a "show route" output from birdc6, but I
don't. I only see the default:
root@os-test:~# birdc6
BIRD 1.6.6 ready.
bird> show route
::/0 via 2a03:9802:1000:aa::1 on ens2 [kernel1 21:14:40] *
(10)
bird>
If I add a protocol direct section, then I get device routes but still
not indirect kernel routes.
Some other stuff about the system, sorry if this hasn't pasted so well.
root@os-test:~# uname -a
Linux os-test.portfast.net 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5
(2019-06-19) x86_64 GNU/Linux
root@os-test:~# netstat -rn6
Kernel IPv6 routing table
Destination Next Hop Flag Met Ref
Use If
::1/128 :: U 256 2
0 lo
2a03:9802:1000:aa::/64 :: U 256 3
0 ens2
2a03:9804::/64 2a03:9802:1000:aa::1 UG 1 1
0 ens2
fe80::/64 :: U 256 1
0 ens2
::/0 2a03:9802:1000:aa::1 UGH 1024 2
0 ens2
::1/128 :: Un 0 4
0 lo
2a03:9802:1000:aa::2/128 :: Un 0 3
0 ens2
fe80::5054:ff:fe10:d040/128 :: Un 0 3
0 ens2
ff00::/8 :: U 256 2
0 ens2
::/0 :: !n -1 1
0 lo
Thanks,
--
Tom Bird
http://www.portfast.co.uk/ : AS8916
UK Limited company #6061075 : +44 1777 29 28 27
