[OpenSER-Users] Strange ACK format gives OpenSER error?

Hi all, after a patch from one of our providers ACKs started to come with R-URI looking like: ACK <sip:192.168.0.1;lr=on;ftag=507454020> SIP/2.0 instead of: ACK sip:192.168.0.1;lr=on;ftag=507454020 SIP/2.0 like it did before the patch. The new ACK format gives an error in OpenSER: Jul 6 11:35:55 ser1 /sbin/openser[9634]: ERROR: parse_uri: bad uri, state 0 parsed: <<sip> (4) / <<sip:192.168.0.1;lr=on;ftag=507454020>> (38) Jul 6 11:35:55 ser1 /sbin/openser[9634]: ERROR: parse_sip_msg_uri: bad uri <<sip:192.168.0.1;lr=on;ftag=507454020>> Jul 6 11:35:55 ser1 /sbin/openser[9634]: loose_route: Error while parsing Request URI Are the new format of the ACKs valid? With the "<>"? If they are valid, the problem lies in OpenSER? Br, /Tobias