Comcast DNS breaks the internet
Posted Sun, 16 Aug 2009
I only noticed this now. Perhaps it is old.
% dig +noquestion +nostats +nocmd +nocomments www."I wonder if this query will return".com www.I\032wonder\032if\032this\032query\032will\032return.com. 0 IN A 22.214.171.124 % dig +short www."$(dd if=/dev/urandom bs=1 count=30 2> /dev/null)".com 126.96.36.199Comcast only appears to be stealing dns queries for www.*.<tld>, which is slightly less annoying than what OpenDNS does, but OpenDNS is opt-in (you have to point your dns at opendns, where Comcast tells your cable modem what it should advertise for dns over dhcp).