May 22 13:10:40 proxy-1 ser[15758]: ERROR: extract_mediaip: no `c=' in SDP
May 22 13:10:40 proxy-1 ser[15751]: ERROR: extract_mediaip: no `c=' in SDP
May 22 13:10:40 proxy-1 ser[15754]: ERROR: extract_body: message body has length zero
May 22 13:10:40 proxy-1 ser[15754]: ERROR: fix_nated_sdp: cannot extract body from msg!