the lady with the hole in her stocking ([info]steph99) wrote,
@ 2008-02-07 14:32:00
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Entry tags:lore, teh unix

<3 sysadmin lore <3
"Once upon a time, BIND only understood units of seconds for the four fields we just described. (Consequently, a whole generation of administrators know that there are 608400 seconds in a week.)"

from o'reilly grasshopper book


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(Anonymous)
2008-02-08 01:02 am UTC (link)
one of my favorite interview questions i've heard is "why only 13 root DNS servers"?
--cooper

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[info]steph99
2008-02-08 11:19 pm UTC (link)
For those of you following at home:

ICANN
The current limitation to thirteen root nameservers arises from the practical need to have most DNS responses fit within the maximum 512 bytes that UDP can accommodate. If a DNS query results in a response that cannot fit within a 512-byte DNS message, the response is truncated and returned to the client with an indicator (the "TC bit") set to indicate that truncation has occurred. Truncated responses can result in the client sending the query again using TCP [RFC 2181, page 11].

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