I'm running OpenBSD, or maybe FreeBSD. I don't have lots of IPv4 addresses to waste, but who doesn't have a few billion of IPv6 ones? How do I add some extra IPv6 hops to a traceroute6, around pf(4) ...
I'm sure that in my network I will not use IPv6 only IPv4. So according to the KISS principle I will need to disable it. How can I do it? OS is OpenBSD 5.1.