[asterisk-users] iax2 bindaddress: how to reload so iax2 can bind to an alias IP

[Vieri]

--- On Fri, 1/9/09, Tilghman Lesher <tilghman at mail.jeffandtilghman.com> wrote:
> > --- On Fri, 1/9/09, Josiah Bryan
> <jbryan at productiveconcepts.com> wrote:
> > > Is this right after bringing online the alias IP?
> > > If so, you might try using arp-sk to broadcast an
> ARP
> > > packet to kick-start the IP lookup...
> > > http://sid.rstack.org/arp-sk/
> >
> > Thanks for the link.
> > However, it's not that the two boxes don't
> "see" each other: they can ping,
> > do HTTP, etc. The only service not working is IAX (ie.
> "iax2 show peers"
> > says that the peer is unreachable). So basically, if I
> try to communicate
> > with the alias IP address via several protocols such
> as HTTP, ICMP, SSH,
> > etc, then all works fine. However, if I setup a iax
> trunk, it does not
> > work.
> > I also tested the connection with a softphone (zoiper)
> and it fails too (it
> > fails to connect to the alias IP but it connects fine
> to the nic's
> > "standard" IP address).
> >
> > So, I'm puzzled by the following:
> >
> > These WORK:
> > telnet <alias_IP> 80
> > ssh <alias_IP>
> > ping <alias_IP>
> > iaxclient <standard_IP>
> >
> > But this doesn't:
> > iaxclient <alias_IP>
> >
> > even though iax.conf has bindaddr=0.0.0.0
> >
> > Any clue as to why it's behaving this way?
> 
> Yes.  All protocols prior to 1.6.0 use the routing table to
> determine what
> address to use when sending out packets related to a call. 
> Normally, the
> alias address is not in the routing table at all, which is
> why it is not
> 'seen' by IAX2.  Now, starting in 1.6.0, we have
> the capability within
> Asterisk to use alias addresses within certain protocols,
> but AFAIK, that
> has only been implemented within the SIP stack.

Thanks for your helpful feedback.

Curiously, UDP SIP works with alias IP addresses even in 1.2.30.
I guess that the IAX implementation is lagging behind in this particular field.