[sr-dev] IPv6 problem with kamailio 3.0

[Klaus Darilion]

Andrei, I think having IPv6 routing without AAAA lookups is a useful 
scenario. Is it possible to make a third option for dns_try_ipv6? e.g.:

dns_try_ipv6=off: no ipv6 routing
dns_try_ipv6=nodns: ipv6 routing, but no AAAA lookups
dns_try_ipv6=on: ipv6 routing and AAAA lookups

regards
Klaus

Am 16.02.2010 21:36, schrieb Andrei Pelinescu-Onciul:
> On Feb 16, 2010 at 18:30, Klaus Darilion<klaus.mailinglists at pernau.at>  wrote:
>> just as info: I have "dns_try_ipv6=no"
>
> Try dns_try_ipv6=yes (or change it at runtime with
>   sercmd cfg.set_now_int core dns_try_ipv6 1
>
>>
>> but as this destination is already an IP address this setting should not
>> matter.
>
> I think we better fix the docs. If dns_try_ipv6 is off, no hostname
> resolving that would result in an ipv6 address would succeed (it doesn't
> matter if an actual dns lookup is to be performed or the host is already
> an ip address).
>
> I don't think that the case where you don't want AAAA lookups, but you
> want IPv6 addresses in hostnames has much practical use, except maybe
> some extra optimization (at least to me it sounds strange that you would
> support IPv6 addresses, but not dns names).
>
> If it's about the order of AAAA and A lookups, this can be controlled
> (setting dns_cache_flags to 4 will try AAAA first and then A,
>   by default it's the reverse).
>
> So do you really want to optimize away the AAAA lookup made if an A
> record is no found?
>
>
> Andrei
>
>>
>> Am 16.02.2010 18:20, schrieb Klaus Darilion:
>>> Hi!
>>>
>>> I have a client wich registers via IPv6 - that works. Now, if this
>>> client is called, t_relay generates errors and no message is sent:
>>>
>>> INFO:<script>: main branch in branch_route[1]:
>>> INFO:<script>:
>>> $ru=sip:klaus.darilion@[2A02:850:2:2:8C4:955A:C892:A15A]:1066;transport=UDP
>>> INFO:<script>: $du=sip:[2A02:850:2:2:8C4:955A:C892:A15A]:1066
>>> INFO:<script>: $bF=00000040
>>>
>>> ERROR:<core>  [resolve.c:1502]: ERROR: sip_hostport2su: could not
>>> resolve hostname: "[2A02:850:2:2:8C4:955A:C892:A15A]"
>>> ERROR: tm [ut.h:318]: failed to resolve "[2A02:850:2:2:8C4:955A:C892:A15A]"
>>>
>>> regards
>>> Klaus
>>>
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>>
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