Hi Rob,
ampr-ripd works as expected without the -r option on my debian 7 setup with kernel 3.2.0-4 and libc 2.13.38-0deb7u7. I never upgraded to 2.13.38-0deb7u8, so the problem could be there.
By the way, as sugested by Brian, N1URO, I think the -r option could be dropped so that the daemon always uses raw sockets. The only restriction would be that it must be run as root, since access to raw sockets is restricted to root only, but this shouldn't be a problem.
73s de Marius, YO2LOJ