Guo-wei Shieh 898d21c1d4 WebRTC might leak srflx ip address when multiple_routes disabled and IceTransportType is relay.
This change filters out local ports when CF_HOST is not originally specified to prevent these ports from sending out STUN which leaks IP address.

BUG=webrtc:4946
R=pthatcher@webrtc.org

Review URL: https://codereview.webrtc.org/1378753003 .

Cr-Commit-Position: refs/heads/master@{#10121}
2015-09-30 17:55:05 +00:00
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