[SR-Users] Kamailio, Keepalived: Kamailio doesn't respond on virtual IP but real IP

Francisco Casasempere francisco.casasempere at gmail.com
Tue Nov 12 08:57:27 CET 2013

I've the same deployment.

And I don't have any problem,.. but in kamailio.cfg I setted the Virtual IP


At least this is the Ip that should work.

I hope this help you.


2013/11/12 Nguyễn Đức Vinh <vinhndk50ca at gmail.com>

> Hi all
> I want to setup IP failover for Kamailio:
> I have 2 hosts A (IP: X.X.X.32) and B (X.X.X.36), with 2 running kamailios.
> Using Keepalive to setup IP failover as , virtual IP *is X.X.X.43*.
> On host A, kamailio was binded to *listen=udp:
> <>* and host A is MASTER with virtual IP
> *Problem is:* Client send REGISTER to X.X.X.43:5060. It recieved 401
> respond from X.X.X.32:5060 (actual IP of A), not as expected from
> X.X.X.43:5060
> (To check if keepalived setting OK or not, I have *nc -l 5060* on host A,
> and using nc X.X.X.43 5060 on client, wireshark show that responds is from
> X.X.X.43 -> keepalived work OK
> Is there any difference between *kamailio* and *nc* cause they both bind
> to, but repond on differ IP?
> Thanks
> Vinh Nguyen
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