On Fri, May 13, 2022 at 11:53:23AM -0700, David Christensen wrote: > On 5/13/22 09:02, Richmond wrote: > > stat /etc/resolv.conf shows that the file has been updated but its > > content doesn't change. > > My /etc/resolv.conf did not change after running Network Manager; it changed > after rebooting. (Is the former a bug or a feature?)
Typically, if your system is running a DHCP client daemon to manage the addresses on any or all of your physical interfaces, the DHCP client daemon will rewrite the /etc/resolv.conf file whenever it feels like it. This could be each time the lease is renewed, or each time any piece of information received from the DHCP server has changed since the previous response, or... anything. If you're fighting against your networking tools to maintain correct content in your /etc/resolv.conf file, I suggest starting with <https://wiki.debian.org/resolv.conf> which has details on some of the choices available to you.
