I was running sudo apt update && sudo apt upgrade -y yesterday. There was an update for the package ebtables (I looked it up and apparently it is iptables but for Ethernet?). However, apt was failing to install it.
root@win10:~# apt dist-upgrade -V Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be upgraded: ebtables (2.0.10.4-3.5ubuntu2 => 2.0.10.4-3.5ubuntu2.18.04.1) 1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/79.9 kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? [Y/n] (Reading database ... 29277 files and directories currently installed.) Preparing to unpack .../ebtables_2.0.10.4-3.5ubuntu2.18.04.1_amd64.deb ... invoke-rc.d: could not determine current runlevel * Error: insufficient privileges to access the ebtables rulesets. invoke-rc.d: initscript ebtables, action "stop" failed. dpkg: warning: old ebtables package pre-removal script subprocess returned error exit status 1 dpkg: trying script from the new package instead ... invoke-rc.d: could not determine current runlevel * Error: insufficient privileges to access the ebtables rulesets. invoke-rc.d: initscript ebtables, action "stop" failed. dpkg: error processing archive /var/cache/apt/archives/ebtables_2.0.10.4-3.5ubuntu2.18.04.1_amd64.deb (--unpack): new ebtables package pre-removal script subprocess returned error exit status 1 update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults invoke-rc.d: could not determine current runlevel E: Sub-process /usr/bin/dpkg returned an error code (1)
I tried a reboot, sudo dpkg --configure -a, and sudo apt clean/autoclean/remove/install -f/update/..., but nothing worked.
What should I do now? Should I just hold the package (sudo apt-mark hold ebtables)? Is there a workaround to installing it?
from: https://answers.microsoft.com/en-us/windows/forum/windows_10-windows_install/errors-in-ubuntu-1804-on-windows-10/fe349f3d-3d58-4d90-9f8f-c14d7c12af8b
It shouldn't be needed under WSL because the tables are managed by the Linux kernel, and in WSL you're not using the Linux kernel. Can't seem to remove it because of this error, but you can safely ignore it.
Update: The pre-removal script and ebtables stop script have been fixed in the ubuntu package so that upgrading should now work.
http://changelogs.ubuntu.com/changelogs/pool/main/e/ebtables/ebtables_2.0.10.4-3.5ubuntu2.18.04.3/changelog
https://bugs.launchpad.net/ubuntu/+source/ebtables/+bug/1774120
https://github.com/Microsoft/WSL/issues/3274