*** Submitted as
http://code.google.com/p/go/source/detail?r=838dac337e60&repo=net ***
go.net/proxy: fix IP address determination
net.IP represents either an IPv4 or IPv6 address. In case of
the address of IPv4 node, it uses IPv4-mapped IPv6 address
format by default.
R=agl, dave
CC=golang-dev
http://codereview.appspot.com/6782078
http://codereview.appspot.com/6782078/
