am 8a33e964: am 5306e0a8: Merge "SIP: add PEER_NOT_REACHABLE error feedback." into gingerbread

Merge commit '8a33e964c48d22469487c8ec1d951826b7e3e562'

* commit '8a33e964c48d22469487c8ec1d951826b7e3e562':
  SIP: add PEER_NOT_REACHABLE error feedback.