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ARGH!!!!! Every release causes new problems >:(
If you have:
linux DHCP server on the network with options:
option domain-name "xyz.com";
option domain-name-servers 4.2.2.2, 4.2.2.3;
In Ubuntu 10.x it works fine and pulls the DHCP client pulls the DNS
servers from the DHCP fine.
Ubuntu 12.x - It's broken.
Trying to fix with: adding to /etc/network/interfaces
dns-nameservers 4.2.2.2 4.2.2.3
dns-search xyz.com
FAIL. Because you have iface eth0 inet dhcp that option isn't read
Try and configure with Network Manager from commandline because your running a
server.
NOPE, network manager doesn't run from CLI commandline only GUI
Can't manually specify the DNS server in /etc/resolv.conf because it's
always getting overwritten.
What's the best option here? I think this might be a bug. Only option I
haven't tried is using the head file from this description:
Resolvconf has a /etc/resolvconf/resolv.conf.d/ directory that can contain
“base”, “head”, “original” and “tail” files. All in resolv.conf format.
base: Used when no other data can be found
head: Used for the header of resolv.conf, can be used to ensure a DNS server is
always the first one in the list
original: Just a backup of your resolv.conf at the time of resolvconf
installation
tail: Any entry in tail is appended at the end of the resulting resolv.conf. In
some cases, upgrading from a previous Ubuntu release, will make tail a symlink
to original (when we think you manually modified resolv.conf in the past)
** Affects: bind9 (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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DHCP server handing out DNS server addresses but DHCP client does not write
these to resolv.conf
https://bugs.launchpad.net/bugs/1045616
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