With kernel 5.10 the netfilter API was slightly modified. This change was backported to the stable kernels (including 5.4) thereby breaking xtables-addons-dkms. The API change is really very simple; the enclosed patch contains the change that were made to upstream xtables-addons from version 3.8 to 3.12
** Patch added: "Update to kernel API 5.10" https://bugs.launchpad.net/ubuntu/+source/xtables-addons/+bug/1897848/+attachment/5452382/+files/0002-kernel-5.10-support.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1897848 Title: package xtables-addons-dkms 3.8-2 failed to install/upgrade: installed xtables-addons-dkms package post-installation script subprocess returned error exit status 7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xtables-addons/+bug/1897848/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs