02-16-2014
Same IP | Different port | Different MAC
Hello all,
I meet a "strange" situation, at least for me, and i want your opinion.
I have a node used as SIP B2BUA (node A) and i have the following issue.
SIP messages does not reach a client node (node B) but ICMP do.
I see in the pcap that SIP and ICMP messages have different destination MAC address. Only ICMP messages have destination MAC address the MAC of node B.
OS: rhel 6.2
arp table show the MAC of node B.
Any idea?What should i check??
Thanks in advance!
Last edited by @dagio; 02-16-2014 at 11:54 AM..
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LEARN ABOUT OPENSOLARIS
sip_free_msg
sip_hold_msg(3SIP) Session Initiation Protocol Library Functions sip_hold_msg(3SIP)
NAME
sip_hold_msg, sip_free_msg - adds and removes a reference from a SIP message
SYNOPSIS
cc [ flag ... ] file ... -lsip [ library ... ]
#include <sip.h>
void sip_hold_msg(sip_msg_t sip_msg);
void sip_free_msg(sip_msg_t sip_msg);
DESCRIPTION
The sip_hold_msg() function adds a reference to the SIP message passed as the argument. The reference is used to prevent the SIP message
from being freed when in use.
The sip_free_msg() function is used to remove an added reference on the SIP message passed as the argument. If this is the last reference
on the SIP message (i.e. the number of references on the SIP message is 0), the SIP message is destroyed and associated resources freed.
Freeing a SIP message does not set the sip_msg pointer to NULL. Applications should not expect the pointer to a freed SIP message to be
NULL.
RETURN VALUES
The value of errno is not changed by these calls in the event of an error.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
libsip(3LIB)
SunOS 5.11 25 Jan 2007 sip_hold_msg(3SIP)