thanks
because of "There is also a limitation regarding the use of the
“msg_apply_changes()” function together with the “uac_replace_*”
functions for messages that are loose-routed (e.g. Re-INVITE requests).
In this case you need to call the “loose_route()” function after the
replace and
You can obtain the destination set IP from $dd, or $(du{uri.host}). However,
you can't just modify the To URI like that.
You will need to do it in a way that doesn't break standards-based
proscriptions about what a proxy can do, otherwise endpoint A can look at the
modified header received in
