Bird2 not distributing IPv6 address on dummy to OSPF

[Blažej Krajňák]

Hello everyone,

I just found that neighbour router Mikrotik has the LSA in table. So I
incorrectly mentioned that Bird2 is not advertising route. But that
route does not appear in Mikrotik routing table. I compared the same
configuration with Quagga (which works correctly) and the difference
between LSAs is LA option bit.

NOT WORKING:
referenced-LS-type=Router LSA
referenced-LS-ID=0
    prefix=2a02:6ca3:0:2::25/128 options=01000000  (LA)


WORKING:
referenced-LS-type=Router LSA
referenced-LS-ID=0
    prefix=2a02:6ca3:0:2::2/128 options=00000000
    prefix=2a02:6ca3:0:2::3/128 options=00000000
    prefix=2a02:6ca3:0:2::4/128 options=00000000


According to RFC5340:

LA-bit
      The "local address" capability bit.  If set, the prefix is
      actually an IPv6 interface address of the Advertising Router.
      Advertisement of local interface addresses is described in
      Section 4.4.3.9.  An implementation MAY also set the LA-bit for
      prefixes advertised with a host PrefixLength (128).

So does it mean that Mikrotik does not understand "MAY implementation"
of LA-bit for host PrefixLength (128)?

ut 28. 9. 2021 o 1:15 Blažej Krajňák <blazej.krajnak at gmail.com> napísal(a):
>
> Hello,
>
> I just installed fresh Debian 11 server and I need to distribute IPv6
> /128 address from dummy1 interface to OSPF. Direct protocol see that
> address, but neighbour not. Am I missing something?
>
>
> ip -6 route
> 2a02:6ca3:0:2::25 dev dummy1 proto bird metric 32 pref medium
> 2a02:6ca3:0:2::25 dev dummy1 proto kernel metric 256 pref medium
>
> bird> show route table master6
> Table master6:
> 2a02:6ca3:0:2::25/128 unicast [ospf2 00:32:34.008] I (150/0) [172.20.12.25]
> dev dummy1
>
>
> log syslog all;
> router id 172.20.12.25;
> protocol device {
> }
> protocol direct {
>         disabled;               # Disable by default
>         ipv4;                   # Connect to default IPv4 table
>         ipv6;                   # ... and to default IPv6 table
> }
> protocol kernel {
>         ipv4 {
>               export all;
>         };
> }
> protocol kernel {
>         ipv6 {
>                export all;
>         };
> }
> protocol static {
>         ipv4;
> }
> protocol static {
>         ipv6;
> }
> protocol ospf v2 {
>         ipv4 {
>                 import all;
>         };
>         area 0 {
>                 interface "ens192" {
>                         type broadcast;
>                 };
>                 interface "dummy1" {
>                         stub;
>                 };
>         };
> }
> protocol ospf v3 {
>         ipv6 {
>                 import all;
>         };
>         area 0 {
>                 interface "ens192" {
>                         type broadcast;
>                 };
>                 interface "dummy1" {
>                         stub;
>                 };
>         };
> }