ADSL and DNS Debugging

GNU/Linux Desktop Survival Guide
by Graham Williams

ADSL and DNS Debugging

Slow and sometimes failing DNS lookup, because /etc/resolv.conf used the ADSL Modem/Router as the DNS, and seemd to update this at around 9:30am each day to:

  search
  nameserver 192.168.0.1
  nameserver 0.0.0.0

Changing back to:

  nameserver 203.0.178.191

fixes the DNS problems. The router seems to correctly identify the DNS itself (203.0.178.191) but somewhere things don't work. This is overridden in /etc/dhclient.conf by adding the two lines:

send host-name "athens.togaware.com";
supersede domain-name-servers 203.0.178.191;

Perhaps the router is smart enough to do local DNS with athens mapped appropriately? If so, then don't need the static (but possibly changing) entries in /etc/hosts.

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ADSL and DNS Debugging