[sr-dev] dns_try_ipv6
Juha Heinanen
jh at tutpro.com
Thu May 28 21:32:36 CEST 2009
Andrei Pelinescu-Onciul writes:
> dst_blacklist_init=off if you want it disabled without the possibility
> to enable it later ar runtime.
> use_dst_blacklist=off, if you want to start with it disabled, but with
> the possibility to enable it later at runtime via rpcs
> (e.g. $ sercmd cfg.set_int_now core use_dst_blacklist 1 ).
>
> Note however that the blacklist in sr is ip based and not dns based
> (I don't know how the blacklist worked in k).
i think i was mixing things up again. sr variables are dst, not dns.
perhaps they are not same thing at all. in k,
disable_dns_blacklist
The DNS resolver, when configured with failover, can automatically store
in a temporary blacklist the failed destinations. This will prevent (for
a limited period of time) openser to send requests to destination known
as failed. So, the blacklist can be used as a memory for the DNS
resolver.
The temporary blacklist created by DNS resolver is named ??dns?? and it
is by default selected for usage (no need use the use_blacklist())
function. The rules from this list have a life time of 4 minutes - you
can change it at compile time, from blacklists.h .
Can be 'yes' or 'no'. By default the blacklist is disabled (Default
value is 'yes').
if sip-router does not include dns blacklisting, then i can just delete
the line, because i was turning dns black listing off in k config.
-- juha
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