The RURI of the ACK (INVITe-200) is different when it arrives to Kamailio and when it leaves it, so "something" is modifying it. Of course Kamailio doesn't do that for itself.
Please, believe me: your script is wrong since it's replacing the ACK RURI, that's all.
Your insistency made me take a loong hard look at the script.
What did I find tucked away neatly where I wasn't looking?
if (!uri=~"sip:.+@.+") { rewritehost("domain.net"); };
AAARGH! Basically we have one user that insist on using a client that doesn't add the domain in it's sip uri's when doing INVITES and SUBSCRIBES so some long time ago, these lines were added to help him. I knew I shouldn't have done such a silly thing...
Now I feel stupid for wasting your time :(
And sad that I didn't catch this one myself... Though since our primary GW uses full URI's in the contact field it was never a problem. I can't even remember how long that has been sitting in there... Atleast a year :/
Anyways, thanks for the help, and for making me take a loong good look at parts of the script I'd written off as "perfect".
- Geir