Bugs item #1858946, was opened at 2007-12-27 16:20 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1858946&group_id=180599
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Technologov (technologov) Assigned to: Nobody/Anonymous (nobody) Summary: Qemu doesn't warns user about incorrect MAC Address Initial Comment: NOTE: This is a qemu problem/lack-of-feature, not a KVM one. I Tried to launch 2 VMs connected back-to-back on the same host, but nothing worked, so I wasted a lot of time figuring it out, and my time could be saved, if Qemu could give proper warning on user stupidity/incorrect action. At the end, my colleague pointed me to this problem. Actually I used MAC addresses, that begin with "01:xx:xx:xx:xx:xx" which are multicast MAC addresses, and are illegal to assign them to NIC, and neither the guest OS (Windows XP), and not Qemu didn't complain about that, but the network simply didn't work. The NIC (RTL8139) was detected and installed by the guest OS, without a problem. The full list of illegal MAC addresses, that are Multicast/Broadcast is listen below: http://www.cavebear.com/archive/cavebear/Ethernet/multicast.html Correct behavior would be: to warn a user of his incorrect action, but continue running a VM. Now I just wasted 6 hours. Please improve Qemu to save other people's time... -Alexey Technologov, 26.Dec.2007. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1858946&group_id=180599 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
