Right click on Network Manager tray icon
Edit Connections
Wired
Auto eth0
Edit
IPv4 Settings
Method: Automatic (DHCP) addresses only
Enter two servers in the DNS servers field (e.g. 1.2.3.4,5.6.7.8)
Enter something in the Search Domains box
OK
Click on the Network Manager tray icon
Click on Auto eth0
/etc/resolv.conf is updated according to manual settings
Reboot
Connection has gone back to Automatic (DHCP) and forgotten my DNS customizations
I'm assuming it's the same as my problem:
Right click on Network Manager tray icon
Edit Connections
Wired
Auto eth0
Edit
IPv4 Settings
Method: Automatic (DHCP) addresses only
Enter two servers in the DNS servers field (e.g. 1.2.3.4,5.6.7.8)
Enter something in the Search Domains box
OK
Click on the Network Manager tray icon
Click on Auto eth0
/etc/resolv.conf is updated according to manual settings
Reboot
Connection has gone back to Automatic (DHCP) and forgotten my DNS customizations