Wouter, thanks for your fast response and troubleshooting steps. It turns out to be an issue in the mythbuntu-diskless package, specifically the mythbuntu_nbd script which is calling nbd-client using the old style port 2000 command line, but the newer nbd-server used by oneiric seems to only work with the new style name based request.
I'll follow up with the maintainer of mythbuntu-diskless. ** Changed in: nbd (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/876455 Title: nbd0: Wrong magic (0x25609513) error in Oneiric To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nbd/+bug/876455/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs