interface: eth0 (192.168.254.0/255.255.255.0)
filter: (ip or ip6) and ( port 5060 )
#
U 192.168.254.3:5061 -> 192.168.254.10:5060
REGISTER sip:192.168.254.10 SIP/2.0.
CSeq: 11 REGISTER.
Via: SIP/2.0/UDP 192.168.254.3:5061;branch=z9hG4bK844b1ac8-f11e-dc11-8bdf-00508deb2b98;rport.
User-Agent: Ekiga/2.0.3.
From: <sip:paulo@192.168.254.10>;tag=c0461ac8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 729ba4a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>.
Contact: <sip:paulo@192.168.254.3:5061;transport=udp>.
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,NOTIFY,REFER,MESSAGE.
Expires: 3600.
Content-Length: 0.
Max-Forwards: 70.
.

#
U 192.168.254.10:5060 -> 192.168.254.3:5061
SIP/2.0 401 Unauthorized.
CSeq: 11 REGISTER.
Via: SIP/2.0/UDP 192.168.254.3:5061;branch=z9hG4bK844b1ac8-f11e-dc11-8bdf-00508deb2b98;rport=5061.
From: <sip:paulo@192.168.254.10>;tag=c0461ac8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 729ba4a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>;tag=80267d4de3068c765d60ea7e7aaa6e05.74b8.
WWW-Authenticate: Digest realm="caerj.proderj.rj.gov.br", nonce="467b34ae8a98396694f18683115a8873937d2adf".
Server: OpenSER (1.2.1-notls (i386/linux)).
Content-Length: 0.
.

#
U 192.168.254.3:5062 -> 192.168.254.10:5060
SUBSCRIBE sip:paulo@192.168.254.10 SIP/2.0.
CSeq: 12 SUBSCRIBE.
Via: SIP/2.0/UDP 192.168.254.3:5062;branch=z9hG4bK9a3d1cc8-f11e-dc11-8bdf-00508deb2b98;rport.
User-Agent: Ekiga/2.0.3.
From: <sip:paulo@192.168.254.10>;tag=54381cc8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 08ada7a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>.
Contact: <sip:paulo@192.168.254.3:5062;transport=udp>.
Accept: application/simple-message-summary.
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,NOTIFY,REFER,MESSAGE.
Expires: 3600.
Event: message-summary.
Content-Length: 0.
Max-Forwards: 70.
.

#
U 192.168.254.10:5060 -> 192.168.254.3:5062
SIP/2.0 404 Not Found.
CSeq: 12 SUBSCRIBE.
Via: SIP/2.0/UDP 192.168.254.3:5062;branch=z9hG4bK9a3d1cc8-f11e-dc11-8bdf-00508deb2b98;rport=5062.
From: <sip:paulo@192.168.254.10>;tag=54381cc8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 08ada7a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>;tag=80267d4de3068c765d60ea7e7aaa6e05.ec5a.
Server: OpenSER (1.2.1-notls (i386/linux)).
Content-Length: 0.
.

#
U 192.168.254.3:5061 -> 192.168.254.10:5060
REGISTER sip:192.168.254.10 SIP/2.0.
CSeq: 13 REGISTER.
Via: SIP/2.0/UDP 192.168.254.3:5061;branch=z9hG4bK12b41ec8-f11e-dc11-8bdf-00508deb2b98;rport.
User-Agent: Ekiga/2.0.3.
Authorization: Digest username="paulo", realm="192.168.254.10", nonce="467b34ae8a98396694f18683115a8873937d2adf", uri="sip:192.168.254.10", algorithm=md5, response="4f459cd72f73141b0a5b1b1b4880ba2c".
From: <sip:paulo@192.168.254.10>;tag=c0461ac8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 729ba4a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>.
Contact: <sip:paulo@192.168.254.3:5061;transport=udp>.
Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,NOTIFY,REFER,MESSAGE.
Expires: 3600.
Content-Length: 0.
Max-Forwards: 70.
.

#
U 192.168.254.10:5060 -> 192.168.254.3:5061
SIP/2.0 401 Unauthorized.
CSeq: 13 REGISTER.
Via: SIP/2.0/UDP 192.168.254.3:5061;branch=z9hG4bK12b41ec8-f11e-dc11-8bdf-00508deb2b98;rport=5061.
From: <sip:paulo@192.168.254.10>;tag=c0461ac8-f11e-dc11-8bdf-00508deb2b98.
Call-ID: 729ba4a1-f01e-dc11-8bdf-00508deb2b98@phd.
To: <sip:paulo@192.168.254.10>;tag=80267d4de3068c765d60ea7e7aaa6e05.1e67.
WWW-Authenticate: Digest realm="caerj.proderj.rj.gov.br", nonce="467b34ae8a98396694f18683115a8873937d2adf".
Server: OpenSER (1.2.1-notls (i386/linux)).
Content-Length: 0.
.