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Probe dns service - anycast network

  • From: Gere geomag
  • Date: Thu Nov 11 18:04:43 2004
  • Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding; b=V/T3/zR6wnBpmfPDc5UeT82HNJ2zzUSAksnUEAtKiVLmXAsVZZNgmlIVGNba2w/R5UaHgP01G/+JPtbNQDv1HGmOoLEnYqUY/IebC1TIo6Tlvgb7R9t7GeTAOj3A2fPQVv/sBWxtrd7jVxyj1grO08V7eRjfq7RuOyyWOYiXrv4=
Hi,
We are thinking of deploying anycast in our network for dns servers.
I have the following scenario: 
 - 10 server DNS (isc-bind) , linux and zebra for propagating ospf ip anycast.

Are there someone who has developed a "solid scripts (perl/c/ecc..)"
that is used to probe a dns service (udp/tcp port 53) and in case of
failure (or max lookup query time problem) automatic shutdown ospf
annunce or remove a server from a anycast network?

Best regards
Antony Findanno