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Old 11th July 2008
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18Googol2 18Googol2 is offline
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Originally Posted by EvanED View Post
In addition, it will occasionally forget the IP at which point it goes back to that.
Sorry for not reading your full post, Im in rush atm

Which site the dns server *forget* the IP? I suspect the TTL is too short here. IIRC, there are some sites like facebook which uses DNS roundrobin, the TTL is set only for 1 min. If the next dns request is > 1 min after the previous one, the dns server *forgets* IP (A record) and needs to query the authorative dns server of the facebook site again.

TTL can be checked with dig
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