Hi Fellow BIRD users, It appears that BIRD does not fully appreciate RFC3021 style addresses on Ubuntu 15.04, when I start BIRD: syslog:Nov 10 15:25:15 eunetworks-2 bird: KIF: Invalid broadcast address 255.255.255.255 for em1 syslog:Nov 10 15:25:15 eunetworks-2 bird: KIF: Invalid broadcast address 255.255.255.255 for p2p2.1003 syslog:Nov 10 15:25:15 eunetworks-2 bird: Started root@eunetworks-2: # ip -4 addr show dev em1 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 inet 94.142.247.237/31 brd 255.255.255.255 scope global em1 valid_lft forever preferred_lft forever root@eunetworks-2: # ip -4 addr show dev p2p2.1003 14: p2p2.1003@p2p2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default inet 78.152.32.177/31 brd 255.255.255.255 scope global p2p2.1003 valid_lft forever preferred_lft forever Should I configure the Linux side of things differently or is this something that needs resolving in BIRD itself? root@eunetworks-2:~# uname -a Linux eunetworks-2 3.19.0-32-generic #37-Ubuntu SMP Wed Oct 21 10:23:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux root@eunetworks-2:~# dpkg -l | grep bird ii bird 1.5.0-1+vivid+1 amd64 Internet Routing Daemon root@eunetworks-2:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.04 Release: 15.04 Codename: vivid Kind regards, Job