let tin have a proper IPv6 address

the one it gets per default is not
mapped, so the IPv6 address will not
match the IPv4 compatibility format

and then it will not match the cidr used
by tcpircbot  ('::ffff:10.64.0.196/128',     # tin)

and then dologmsg on tin will try Ipv6 first
but timeout, then try IPv4 and work,
which results in about 1 minute delay when
scapping

either this, or make it use IPv4

http://en.wikipedia.org/wiki/Dot-decimal_notation

Change-Id: Iadd9b9786c1a9c7a16b8bf4be022f5f97cbe57b7