@Serge, Yes, I've using that suggestion (pre-up ....) in the /etc/network/interfaces file of the KVM Host, and the "interface freeze" problem disappeared since I added that line, a month ago.
I'd recommend to use it and check if it works for you too. Regards, Marcelo -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/579892 Title: libvirt should not use the MAC address assigned to tap devices/vnet interfaces by the TAP/TUN driver -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs