The 6bone phaseout day (06/06/06) came and went last week. It does seem to have had some impact. From one site, my route to KAME went through Sprint’s 6bone space at two points. Later in the week, one of the routers had been renumbered, and by today I don’t see any 6bone addresses in the list.
This did bring a vaguely interesting point to mind. If someone that you get transit from uses 6bone addresses and you drop packets to/from 6bone addresses, then you can break things like traceroute and PMTU discovery, because they depend on getting packets from intermediate hosts. Though, people offering you transit probably shouldn’t really be using 6bone space any more. (The Ghost Route Hunter guys are monitoring who is still using 6bone space.)
The use of ip6.int also faded further - the RIRs have deleted their deligations in the ip6.int tree. Unfortunately, for people with hosts that use ip6.int, one of the servers for ip6.int has a 6bone address, which is now unreachable from chunks of the IPv6 Internet.