Hello,

I use OpenSer with Cisco AS5300/5350/5400 with IOS 12.3.
When Cisco sends an OK 200 SIP message to OpenSer, there are two "c=IN IPV4" tags in sdp body with the same IP address.
The nathelper module only replaces the last occurence of c= tag so some SIP clients works wrong because those  get the first IP from the first  "c=" tag…

How can i replace the all occurences of "c=" tag in sdp body with the help of nathelper?

Thx,

Antal

Content-Type: application/sdp.
Content-Length: 277.
.
v=0.
o=CiscoSystemsSIP-GW-UserAgent 7144 773 IN IP4 213.253.220.242.
s=SIP Call.
c=IN IP4 213.253.xxx.xxx.  -> this is the original address of Cisco GW
t=0 0.
m=audio 35944 RTP/AVP 18.
c=IN IP4 213.253.xxx.yyy.       -> this is the nated address replaced by nathelper
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
m=video 35946 RTP/AVP.
c=IN IP4 213.253.220.253.
a=nortpproxy:yes.