At the IETF meeting in Anaheim, USA, the internet access this morning was broken for IPv4, while IPv6 works like a charm.
I think we will see more and more of this in the future. It is interesting sitting here surfing around, making phone calls etc, and see what services work. Some do not, and that is of course because they only have IPv4 access.
paf$ ping -c 4 stupid.domain.name PING stupid.domain.name (126.96.36.199): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 --- stupid.domain.name ping statistics --- 4 packets transmitted, 0 packets received, 100.0% packet loss paf$ ping6 -c 4 stupid.domain.name PING6(56=40+8+8 bytes) 2001:df8::24:226:bbff:fe15:8d13 --> 2a02:80:3ffe::39 16 bytes from 2a02:80:3ffe::39, icmp_seq=0 hlim=59 time=191.714 ms 16 bytes from 2a02:80:3ffe::39, icmp_seq=1 hlim=59 time=190.497 ms 16 bytes from 2a02:80:3ffe::39, icmp_seq=2 hlim=59 time=194.374 ms 16 bytes from 2a02:80:3ffe::39, icmp_seq=3 hlim=59 time=189.594 ms --- stupid.domain.name ping6 statistics --- 4 packets transmitted, 4 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 189.594/191.545/194.374/1.798 ms