is it possible your windows host is behind either an explicit proxy or a transparent proxy (like bluecoat)?
for the explicit case, reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" look for "proxyserver" or "AutoConfigURL" -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.