'protection strong' and IPv6

[mikemol]

Uncertain, but by my notes, 'protection strong' may only appropriately function with an 'ipv4' prefix, but I have it commented out completely on any dual-stack interfaces, so it may be breaking IPv6 there. Need to look into that a bit more.

[mikemol]

Whatever problem I'd been dealing with before, I haven't managed to reproduce it on my dual-stack webserver. If I can't identify any problems when I put it back on my dual-stack router, I'll have to chalk it up to some historic misdiagnosis.