Comment 4 for bug 1252832

A new upstream network-manager-openvpn commit contains a reworking of the multiple gateways functionality:

c55ba4e 2014-07-11 core/ui: allow specifying port and protocol for gateways (bgo #712710)

This should be cherry-picked since it is not part of an upstream release and is unlikely to be included in Utopic, and thus can't be simply back-ported.