I want to customize a Ubuntu Desktop Iso and I have come that far, that I am in the chroot environment.

The problem is that I do not have Internet access in there to install anything.

I just can ping, but not www.google.com (for example). Everything goes through a proxy tho, so I made a file apt.conf in the apt folder of the chroot environment but still nothing happens.

I can not run lines like: sudo apt-get update -> It just says "W: Failed to Fetch over and over again"

Does somebody know a solution? I followed these steps (to the part with the sed commands)


You have internet connection, as evidenced by the ping to You just don't have DNS name resolution.

See the file /etc/resolv.conf in your root file system and copy it to the chroot environment.

  • Thank you for your help, I already tried this sudo cp -a /etc/resolv.conf ~/remastering/newfilesystem/etc/ – kcdk Nov 15 '18 at 6:59
  • I also tried using a simple network without any proxys instead. Still no connection to apt commands – kcdk Nov 15 '18 at 7:00
  • In the chroot, try nslookup, host, dig or any program of your choice to verify that DNS resolution works. – RalfFriedl Nov 15 '18 at 7:02
  • Thanks, I did the asked commands but it says on both (nslookup host and dig): ;; connection timed out; no servers could be reached than I tried ping for fun again and this worked with 10,2ms responsetime So weird!# – kcdk Nov 15 '18 at 7:30
  • 2
    I copied the root resolv.conf in my home folder and copied it than into the chroot environment. NOW pinging www.google.com AND apt commands work! THANK U! – kcdk Nov 15 '18 at 8:24

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