local10 <loca...@tutanota.com> writes: > Nov 1, 2018, 1:57 PM by mst...@debian.org: > >> On Thu, Nov 01, 2018 at 05:43:56PM +0100, local10 wrote: >> >> That means it's down. Note that you said enp3so above, that should >> be enp3s0 (zero); which did you put in interfaces? Also, there >> should be either "auto enp3s0" or "allow-hotplug enp3s0". Assuming >> that's all right, try manually running "ifup -v enp3s0". >> > > That was it. I did have "allow-hotplug" but it was still pointing to enp2s0, > not paying attention obviously. After changing "allow-hotplug enp3s0" the > network came back, everything works. > > So my experience indicates that it is quite possible to replace the > motherboard, stick the old hard disk in and the only change that's > required (in my case) was to change "/etc/network/interfaces" to > reflect the new interface name from enp2s0 to enp3s0 . No need to > change NIC MAC address. > > Thanks to everyone who responded.
For what it's worth, I'm running network-manager and my ethernet port (enp4s0 in my case) isn't listed in /etc/network/interfaces at all. All that's in there is lo (the loopback interface).
