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