Jeremy Kister wrote:
Has anyone experience anycasting tinydns and/or dnscache?
I'm going to start an implementation with three separate sites each
injecting four /32s into my iBGP.
I am considering writing my own daemon that will frequently query the
resolver and so long as everything is working fine will keep the /32
injected.
If anyone has an implementation or ideas, I'd like to see how you have
it working and any problems you have worked around.
thanks,
Hi Jeremy,
you may see anycasting as yet another bug in the routing network.
djbdns will not know about a bug in the routing and will work normally.
Some of your clients will see the bug. They will get more that one answer
seemingly from one an the same host.
udp will show no problems.
tcp will break from time to time. Nevertheless AXFR transfers will work
most of the time.
The multiple answers have been reported about the root-servers (ICANN).
I have seen similar things in the Public-Root. The network 205.189.71.0/8
was meant to be anycasted but it never worked. They did have routing
issues even without anycast.
On at client side dnscache is more likely to report errors than e.g. bind.
dnscache is more paranoid and getting more than one answer is not what
I expect.
Kind regards
Peter and Karin
--
Peter and Karin Dambier
Cesidian Root - Radice Cesidiana
Rimbacher Strasse 16
D-69509 Moerlenbach-Bonsweiher
+49(6209)795-816 (Telekom)
+49(6252)750-308 (VoIP: sipgate.de)
mail: peter@cesidianroot.com
mail: peter@echnaton.arl.pirates
http://www.cesidianroot.com/
http://iason.site.voila.fr/
https://sourceforge.net/projects/iason/
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