[asterisk-users] IPv6 and IPv4 binding address on a server with 2 network cards

[Miguel Baptista]

Hi Asghar,

Thanks for you reply. Which Asterisk version are you using?

I am using Asterisk 11.1.0
when I use the /bindaddr  /parameters with specific IP addresses,
Asterisk will listen only on the last entry.

For example, when I have
/bindaddr=ipv4A:port
//bindaddr=[ipv6A]:port /

it will listen only on the IPv6A address

and when I have the other way around:
/
bindaddr=[ipv6A]:port /
/bindaddr=ipv4A:port
//
/Asterisk will only listen on the IPv4A address.

The only way I found to force asterisk to listen on both IPv4A and IPv6
A was to use/bindaddr=[::] /but it makes asterisk to listen also on the
other IP addresses.

Maybe this is fix on a newer Asterisk version.

- Miguel Baptista

On 3/10/2013 8:04 PM, Asghar Mohammad wrote:
> hi,
> i am using similer setup just put / bindaddr=ipv4A:port
> and //bindaddr=[ipv6A]:port ans it should work./
>
> On Sun, Mar 10, 2013 at 3:04 PM, Miguel Baptista
> <miguel.baptista at uninett.no <mailto:miguel.baptista at uninett.no>> wrote:
>
>     Hello,
>
>     I am doing some tests with asterisk on a dual-stack environment. 
>     I have some doubts regarding asterisk binding addresses on a
>     server with 2 network cards.
>
>     According to asterisk documentation:
>
>         /; With the current situation, you can do one of four things:/
>         /;  a) Listen on a specific IPv4 address.      Example:
>         bindaddr=192.0.2.1/
>         /;  b) Listen on a specific IPv6 address.      Example:
>         bindaddr=2001:db8::1/
>         /;  c) Listen on the IPv4 wildcard.            Example:
>         bindaddr=0.0.0.0/
>         /;  d) Listen on the IPv4 and IPv6 wildcards.  Example:
>         bindaddr=::/
>         /; (You can choose independently for UDP, TCP, and TLS, by
>         specifying different values for/
>         /; "udpbindaddr", "tcpbindaddr", and "tlsbindaddr".)/
>         /; (Note that using bindaddr=:: will show only a single IPv6
>         socket in netstat./
>         /;  IPv4 is supported at the same time using IPv4-mapped IPv6
>         addresses.)/
>         /;/
>         /; You may optionally add a port number. (The default is port
>         5060 for UDP and TCP, 5061/
>         /; for TLS)./
>         /;   IPv4 example: bindaddr=0.0.0.0:5062 <http://0.0.0.0:5062>/
>         /;   IPv6 example: bindaddr=[::]:5062/
>         /;/
>         /; The address family of the bound UDP address is used to
>         determine how Asterisk performs/
>         /; DNS lookups. In cases a) and c) above, only A records are
>         considered. In case b), only/
>         /; AAAA records are considered. In case d), both A and AAAA
>         records are considered. Note,/
>         /; however, that Asterisk ignores all records except the first
>         one. In case d), when both A/
>         /; and AAAA records are available, either an A or AAAA record
>         will be first, and which one/
>         /; depends on the operating system. On systems using glibc,
>         AAAA records are given/
>         /; priority./
>
>
>     Lets say that I have two network cards: A and B.
>     Both interfaces have IPv4 and IPv6 addresses: IPv4 A, IPv6 A, IPv4
>     B and IPv6 B.
>
>     How can I make asterisk to run only on B network addresses (IPv6
>     and IPv4)? The /bindaddr=[::] /config parameter tells asterisk to
>     run on all available addresses, including the addresses on the A
>     network. But that's not exactly what I want.
>
>     - Miguel Baptista
>
>
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