query-source for multiple interfaces
Barry Margolin
barmar at alum.mit.edu
Wed May 17 23:17:38 UTC 2006
In article <e4feh9$12k9$1 at sf1.isc.org>,
Sam Wilson <Sam.Wilson at ed.ac.uk> wrote:
> Looking at the ARM the "query-source" option seems to be able to specify
> only one address. We are investigating anycast DNS on multihomed
> servers. It looks as though I can't use "query-source" to allow queries
> to be sent from any address except the multicast address. Is this true
> and is there any obvious workaround? I've already thought of adding a
> second local /32 address that's specific to the box and sourcing the
> queries from there, but that's getting rather messy.
If the anycast address is an alias IP, I don't think you need to do
anything. I think the OS will automatically default the source address
to the primary IP of the outgoing interface rather than an alias.
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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