File permission is OK now and the PXE process can proceed normally. Sorry for the long delay before my answer. I didn't know that I should look into the ubuntu-proposed repository.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781036 Title: bionic amd64 netboot.tar.gz - bad permission on uncompressed file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1781036/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs