According to the docs, RIP version 1 is not supported, but looking at proto/rip/rip.c, it looks like it is. Which is correct? Also, the docs say that "ipaddress/netmask" (which I take to mean e.g. 10.0.1.0/255.255.255.0) is a valid form for prefixes, but filter/config.Y doesn't appear to allow it. (But hey, my yacc's pretty rusty.) BTW, kudos to the BIRD team. BIRD rains mucho guano on gated zebras.