I'm seeing heavy packet loss within DEN metro for comcast on ipv6 (but not ipv4). mtr to my mail host follows. packet loss the same hop for any site on the internet i try to reach via ipv6. anyone else seeing issues? HOST: localhost. Loss% Snt Last Avg Best Wrst StDev 1.|-- xxxxxxxxxxxxxxxxx 0.0% 10 4.1 4.8 2.5 12.9 2.9 2.|-- xxxxxxxxxxxxxxxxx 0.0% 10 14.2 15.4 13.1 20.2 2.2 3.|-- ae-251-1203-rur01.monument.co.denver.comcast.net 0.0% 10 15.9 20.7 13.2 36.0 8.2 4.|-- ae-12-ar01.denver.co.denver.comcast.net 0.0% 10 23.5 20.6 14.9 32.9 5.4 5.|-- 2001:558:1c0:1058::1 40.0% 10 15.4 18.1 14.8 27.3 4.8 6.|-- be-36031-cs03.1601milehigh.co.ibone.comcast.net 90.0% 10 15.8 15.8 15.8 15.8 0.0 7.|-- be-1314-cr14.1601milehigh.co.ibone.comcast.net 40.0% 10 17.8 17.2 16.1 17.8 0.6 8.|-- be-303-cr14.champa.co.ibone.comcast.net 70.0% 10 18.9 21.1 18.4 26.0 4.2 9.|-- be-1214-cs02.champa.co.ibone.comcast.net 60.0% 10 16.8 17.3 16.7 17.8 0.6 10.|-- be-1212-cr12.champa.co.ibone.comcast.net 30.0% 10 17.2 19.4 15.7 25.5 3.3 11.|-- be-301-cr11.sunnyvale.ca.ibone.comcast.net 0.0% 10 42.2 42.1 39.6 43.8 1.3 12.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0 13.|-- be-3202-pe02.529bryant.ca.ibone.comcast.net 0.0% 10 42.6 43.4 40.7 48.3 2.3 14.|-- 2001:559::14e 0.0% 10 42.7 43.5 41.3 48.8 2.1 15.|-- mail.dragon.net 0.0% 10 42.1 42.7 40.7 47.5 1.9