This is from as similar an environment as I could recreate outside the libguestfs-test-tool. I'd noticed the difference in that rule and tried to remove the SUBSYSTEM check without success before, sorry I didn't mention that.
Here is the udevadm dump, looks like the subsystem is correct, but I'm sure it will mean a lot more to you. Thanks! ** Attachment added: "udev.txt" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1242794/+attachment/3895369/+files/udev.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1242794 Title: Missing virtio-port symlinks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1242794/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs