In reply to mg.

Matej,

alas - I did not poll the v4/v6 stats myself - since the guys were running NetFlow which gave much better granularity...

If I remember well from their stats, the v6 traffic was in the ballpark of 5%. But I must admit to being lazy and not doing IPv6 DNS server assignment via DHCPv6 this year (the "interesting" part was the wifi scalability optimizations stuff) - so I think some clients might have decided to prefer IPv4.

--a