Permission denied & Network is unreachable errors

Pascal Hambourg pascal.mail at plouf.fr.eu.org
Fri Aug 24 10:42:56 UTC 2007


Hello,

Keef wrote :
> 
> Aug 22 17:30:25 tiny named[2462]: ns_resp: sendto([127.255.255.255].53): Permission
> denied

Named tried and failed to query a nameserver at 127.255.255.255. But in 
a typical Linux system this address is the broadcast address on the 
loopback interface, and I guess DNS cannot use broadcast addresses. It 
could be caused by a NS record associatied to a bogus A record 
containing this address.

> Aug 22 17:03:09 tiny named[2462]: sysquery: sendto([2001:dc7::1].53): Network is
> unreachable

Named tried and failed to query a nameserver at 2001:dc7::1, which is an 
IPv6 global address. Does your box have a global IPv6 connectivity, 
which is required to communicate with such an address ? It's usually 
allright if it doesn't, named will eventually query the next nameserver 
with an IPv4 address in the list.

In both cases you may find the "offending" records by digging into named 
cache dump if it's fresh enough.



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