Almost every distro I know will wipe
/etc/resolv.conf on reboot (I think dhcp does this) and thus the place to add static dhcp entries varies per distro. How to I add static dns servers to a CentOS server? so that I know that my entries will survive a reboot?
For CentOS it looks like you add
More generically, iIf you're using
It would really just come down to how you configure your dhcp client.
From the link provided, it seems the relevant file will be