[Users] Any trick to log ACK with siptrace?

[Rodrigo P. Telles]

Hi Folks,

Is there any trick to log ACK method using siptrace module?
I'm trying with:

...
modparam("siptrace", "trace_flag", 22)
modparam("siptrace", "trace_on", 1)

route {
	if (is_method("INVITE|ACK|BYE")) {
		setflag(22);
	};

...

but only INVITE and BYE method has been logged!
I'm using OpenSER 1.1.0-notls.

Thanks for any help

Rodrigo Telles