Package: libguestfs-tools Version: 1:1.28.4-1 After upgrading to 1.28 (a simple apt-get upgrade in Jessie pulls 1.28 now) it seems network is no longer available inside the guest (using virt-builder). 1.26 was working fine, everything broke after upgrading to 1.28. Rolling back to 1:1.26.9-1 from snapshot.debian.org works.
This no longer works in 1.28: # virt-builder debian-7 --run-command 'wget -O /dev/null https://www.debian.org/' [ 1.0] Downloading: http://libguestfs.org/download/builder/debian-7.xz [ 1.0] Planning how to build this image [ 1.0] Uncompressing [ 11.0] Opening the new disk [ 29.0] Setting a random seed [ 29.0] Running: wget -O /dev/null https://www.debian.org/ --2015-01-16 10:26:59-- https://www.debian.org/ Resolving www.debian.org (www.debian.org)... failed: Name or service not known. wget: unable to resolve host address `www.debian.org' virt-builder: wget -O /dev/null https://www.debian.org/: command exited with an error