No network in chroot environment

[Ken D'Ambrosio]

On 2020-01-24 13:13, Volker Wysk wrote:
> Hi
> 
> I'm migrating my old system to a new SSD in a new computer, and come to
> the point to set up the new root file system in a chroot:

Two things come to mind:
* Is it possible you have duplicate IP addresses?  You don't mention 
whether you're static or DHCP.
* You should check and see if you can ping by IP address; it's not clear 
if you're failing networking, or just a host lookup.

-Ken

> cryptsetup luksOpen /dev/nvme0n1p3 nvme0n1p3_crypt
> mount /dev/mapper/nvme0n1p3_crypt /mnt/rootneu
> mount --rbind /dev /mnt/rootneu/dev
> mount --rbind /proc /mnt/rootneu/proc
> mount --rbind /sys /mnt/rootneu/sys
> mount /dev/nvme0n1p2 /mnt/rootneu/boot
> mount /dev/nvme0n1p1 /mnt/rootneu/boot/efi
> chroot /mnt/rootneu
> 
> This works, but the network in the chroot-ed environment isn't
> available:
> 
> Wartung1804 / % LANG=C ping heise.de
> ping: heise.de: Name or service not known
> 
> In the original system, it's fine:
> v at Wartung1804:~$ LANG=C ping heise.de
> PING heise.de(redirector.heise.de (2a02:2e0:3fe:1001:302::)) 56 data
> bytes
> 64 bytes from redirector.heise.de (2a02:2e0:3fe:1001:302::): icmp_seq=1
> ttl=57 time=15.0 ms
> ...
> 
> So what happened to the network..? Might the "mount --rbind ..."
> commands be incomplete?
> 
> Thanks for any help!
> 
> Volker