[Bug 1793060] Re: configure_networking uses features not available in initramfs.

[Vinson Lee]

This types of errors appear when running configure_networking.

/sbin/dhclient-script: line 468: chown: not found


chmod: unrecognized option '--reference=/etc/resolv.conf'
BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu4) multi-call binary.

Usage: chmod [-R] MODE[,MODE]... FILE...

Each MODE is one or more of the letters ugoa, one of the
symbols +-= and one or more of the letters rwxst

        -R      Recurse


no search or nameservers found in /run/net-.conf /run/net-*.conf /run/net6-*.conf

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https://bugs.launchpad.net/bugs/1793060

Title:
  configure_networking uses features not available in initramfs.

Status in initramfs-tools package in Ubuntu:
  Confirmed

Bug description:
  initramfs-tools 0.131ubuntu10 modified configure_networking to use
  run_dhclient instead of ipconfig. configure_networking now fails to
  configure networking in the initramfs because it now uses features not
  available in the initramfs.

  https://git.launchpad.net/ubuntu/+source/initramfs-
  tools/commit/?id=a77729e9a69ff7af4911285c771d80e01b7addfe

  run_dhclient calls dhclient which calls /sbin/dhclient-script.

  /sbin/dhclient-script calls 'chown --reference=$resolv_conf
  $new_resolv_conf', but chown isn't available in initramfs
  /boot/initrd.img-4.18.0-7-generic.

  /sbin/dhclient-script also calls 'chmod --reference=$resolv_conf
  $new_resolv_conf' but busybox chmod in the initramfs does not support
  the option --reference.

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