<html>
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 10 (filtered)">
<style>
<!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
        {margin:0in;
        margin-bottom:.0001pt;
        font-size:12.0pt;
        font-family:"Times New Roman";}
a:link, span.MsoHyperlink
        {color:blue;
        text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
        {color:purple;
        text-decoration:underline;}
span.EmailStyle17
        {font-family:Arial;
        color:windowtext;}
@page Section1
        {size:8.5in 11.0in;
        margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
        {page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi Everyone,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am really stuck here. I really need help!</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I receive the following ACK request in SER from a Linksys/PAP
user agent</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>that SER should forward to the destination User Agent:
1234560133.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>---------------------------------------------------------------------------------------------------------------------------</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ACK </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0
SIP/2.0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5b186b5;rport
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: 1234560133 <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@host.domain.name>;tag=cff8d63370ff3ed5o0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:1234560131@host.domain.name>;tag=26001139010904
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 9b54d80b-81b366dd@172.16.15.51
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CSeq: 101
ACK
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards:
70
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:1234569999@10.1.10.65:5060>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: 1234560133 <</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>sip</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>:1234560133@172.16.15.51:5060>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Linksys/PAP2-3.1.5(LS)
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>---------------------------------------------------------------------------------------------------------------------------</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>But the loose_route function transforms it to the following
and as a result it is routed </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>back to SER and therefore falls into an infinite loop as
shown by the couple of ACKs</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>that get looped through SER:</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>---------------------------------------------------------------------------------------------------------------------------</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ACK </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0
SIP/2.0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5b186b5;rport=5060
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: 2224440133 <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@cl1.glphone.com>;tag=cff8d63370ff3ed5o0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440131@cl1.glphone.com>;tag=26001139010904
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 9b54d80b-81b366dd@172.16.15.51
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CSeq: 101
ACK
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards:
16
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: 2224440133 <</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>sip</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@172.16.15.51:5060>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Linksys/PAP2-3.1.5(LS)
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length:
0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>---------------------------------------------------------------------------------------------------------------------------</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ACK </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0
SIP/2.0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5b186b5;rport=5060
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: 2224440133 <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@cl1.glphone.com>;tag=cff8d63370ff3ed5o0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440131@cl1.glphone.com>;tag=26001139010904
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 9b54d80b-81b366dd@172.16.15.51
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CSeq: 101
ACK
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards:
15
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: 2224440133 <</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>sip</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@172.16.15.51:5060>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Linksys/PAP2-3.1.5(LS)
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length:
0
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>
</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>---------------------------------------------------------------------------------------------------------------------------</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ACK </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0
SIP/2.0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Record-Route: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:10.1.10.65;ftag=cff8d63370ff3ed5o0;lr=on></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 10.1.10.65;branch=0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Via: SIP/2.0/UDP 172.16.15.51:5060;branch=z9hG4bK-5b186b5;rport=5060</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>From: 2224440133 <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@cl1.glphone.com>;tag=cff8d63370ff3ed5o0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>To: <</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>sip</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440131@cl1.glphone.com>;tag=26001139010904</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Call-ID: 9b54d80b-81b366dd@172.16.15.51</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CSeq: 101 ACK</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Max-Forwards: 14</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Contact: 2224440133 <</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>sip</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>:2224440133@172.16.15.51:5060></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>User-Agent: Linksys/PAP2-3.1.5(LS)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Content-Length: 0</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I put some debug messages in rr and this is what I get:</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>DEBUG: -ramin- modules/rr/loose_route: jumping to after_strict</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>after_strict: No next URI found </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It seems as if the after_strict is invoked and it can not
find the next URI!</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Can you please tell me why SER can not route this properly!</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you so much for your kind help</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>ramin</span></font></p>
<p class=MsoNormal dir=RTL style='text-align:right;direction:rtl;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span dir=LTR style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal dir=RTL style='text-align:right;direction:rtl;unicode-bidi:
embed'><font size=3 face="Times New Roman"><span dir=LTR style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
</body>
</html>