bird6 1.3.7 hangs on start on a Raspberry Pi

The config below causes bird6 to hang, without backgrounding, on my Raspberry Pi (model B). The same config on a vortex96sx system (also bird6-1.3.7 under Debian) causes bird6 to apparently start normally - at least it forks and returns. strace on the Pi shows a couple of sendmsg/recvmsg transactions (no errors), then silence. bird6's CPU usage pegs. How can I debug this further? -Eric ------------------------ bird6.conf ------------------- router id 0.0.0.2; protocol kernel { } protocol device { scan time 10; # Scan interfaces every 10 seconds } protocol static { } protocol ospf MyOSPF { area 0 { interface -"lo" { type broadcast; }; }; }