ripng on sit tunnel interface

11 Jan 2024

      Hello.
I am using bird 1.6 on Linux.
If I run the ripng protocol on the sit tunnel interface, until an IPv6 
LinkLocal address is assigned to the interface, the ripng protocol does 
not start (does not receive or send messages). Even if a static unicast 
IPv6 address is assigned to the sit interface.

Example configuration:

protocol rip rip_v6 {
     ecmp no;
     interface "sit-r1"{
         mode multicast;
         version only yes;
         metric 1;
     };
     export filter x;
     import filter y;
}

Linux interface:
sit-r1@eno1: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1480 state 
UNKNOWN qlen 1000
     inet6 2001:db8::2/124 scope global
        valid_lft forever preferred_lft forever

Can ripng in bird 1.6 implementation use an interface with static 
unicast address but without LinkLocal ?

Thank you.

ripng on sit tunnel interface

Ivan