Le 02/08/2017 à 16:19, Greg Wooledge a écrit :
1) Make sure the Debian "resolvconf" package is *not* installed.
You should reconsider this advice. resolvconf may be your best ally to handle such a situation.
3) I have utterly no idea how Network-Manager works
Me neither, but I know one thing : it overwrites /etc/resolv.conf *unless resolvconf is installed* and properly configured.
5) Some DHCP servers send back a list of nameserver IPs even if you don't ask for them. The ISC DHCP client daemon *will* overwrite resolv.conf if it receives them.
*Unless resolvconf is installed* and properly configured.