> > > > just speculating wildly, was this a result of IPv6 deployment going wrong? >
nope, fibre break. Besides, VM have had some level of v6 on some of their connections for yonks (including mine) - seems to have changed though from DSLite to 6to4: C:\Users\chris.russell>ping -6 www.google.com Pinging www.google.com [2a00:1450:4009:819::2004] with 32 bytes of data: Reply from 2a00:1450:4009:819::2004: time=41ms ...
