我有一个工作的虚拟主机是Ubuntu的服务器清醒（10.4）。 我已经使用了一段时间，并在Lucid上创build了几个function的客人。
今天我升级到小牛，然后升级到纳蒂（11.4）。 升级进展顺利，所有我的老客人都来了，function正常。
我创build了一个新的来宾，当它出现，并且似乎没有在日志中的错误，我不能ping或ssh到它。
$ virsh start stg-app2（无错误）…在'virsh list'中显示为'running'
在转换为qcow映像之前，我能够捕获guest虚拟机的interfaces文件（看起来不错）：
cat /tmp/somepath/etc/networking/interfaces # The primary network interface auto eth0 iface eth0 inet static address 192.168.1.193 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 gateway 192.168.1.1 # dns-* options are implemented by the resolvconf package, if installed dns-nameservers 192.168.1.1 dns-search defaultdomain 创build日志：
$ sudo vmbuilder kvm ubuntu \ > --suite lucid \ > --flavour virtual \ > --arch amd64 \ > --mem 512 \ > --rootsize 8192 \ > --swapsize 512 \ > --name 'Josh Sharpe' \ > --user jsharpe \ > --pass ASDFASDFASDFASDF \ > --hostname stg-app2 \ > --ip 192.168.1.193 \ > --mask 255.255.255.0 \ > --net 192.168.1.0 \ > --bcast 192.168.1.255 \ > --gw 192.168.1.1 \ > --addpkg openssh-server \ > --libvirt qemu:///system 2011-09-18 15:46:17,114 INFO : Calling hook: preflight_check 2011-09-18 15:46:17,173 INFO : Calling hook: set_defaults 2011-09-18 15:46:17,174 INFO : Calling hook: bootstrap 2011-09-18 15:59:43,753 INFO : Calling hook: configure_os 2011-09-18 16:00:09,693 INFO : update-alternatives: error: no alternatives for rsh. 2011-09-18 16:00:09,773 INFO : update-alternatives: error: no alternatives for rlogin. 2011-09-18 16:00:09,852 INFO : update-alternatives: error: no alternatives for rcp. 2011-09-18 16:00:11,354 INFO : Creating SSH2 RSA key; this may take some time ... 2011-09-18 16:00:11,502 INFO : Creating SSH2 DSA key; this may take some time ... 2011-09-18 16:00:12,023 INFO : 2011-09-18 16:00:12,023 INFO : Warning: Fake initctl called, doing nothing 2011-09-18 16:00:12,023 INFO : 2011-09-18 16:00:12,023 INFO : Warning: Fake initctl called, doing nothing 2011-09-18 16:00:16,148 INFO : 2011-09-18 16:00:16,149 INFO : Current default time zone: 'Etc/UTC' 2011-09-18 16:00:16,152 INFO : Local time is now: Sun Sep 18 20:00:16 UTC 2011. 2011-09-18 16:00:16,152 INFO : Universal Time is now: Sun Sep 18 20:00:16 UTC 2011. 2011-09-18 16:00:16,152 INFO : Extracting templates from packages: 100% 2011-09-18 16:01:03,447 INFO : 2011-09-18 16:01:03,447 INFO : Current default time zone: 'Etc/UTC' 2011-09-18 16:01:03,449 INFO : Local time is now: Sun Sep 18 20:01:03 UTC 2011. 2011-09-18 16:01:03,449 INFO : Universal Time is now: Sun Sep 18 20:01:03 UTC 2011. 2011-09-18 16:01:03,449 INFO : Run 'dpkg-reconfigure tzdata' if you wish to change it. 2011-09-18 16:01:03,449 INFO : 2011-09-18 16:02:06,239 INFO : Updating certificates in /etc/ssl/certs... WARNING: Skipping duplicate certificate ca-certificates.crt 2011-09-18 16:02:06,548 INFO : 0 added, 1 removed; done. 2011-09-18 16:02:06,548 INFO : Running hooks in /etc/ca-certificates/update.d....done. 2011-09-18 16:02:12,893 INFO : restart: Unknown instance: 2011-09-18 16:02:13,535 INFO : start: Unknown parameter: JOB 2011-09-18 16:02:15,191 INFO : Calling hook: post_install 2011-09-18 16:02:15,191 INFO : Cleaning up 2011-09-18 16:02:15,192 INFO : Calling hook: preflight_check 2011-09-18 16:02:16,160 INFO : Calling hook: configure_networking 2011-09-18 16:02:16,189 INFO : Calling hook: configure_mounting 2011-09-18 16:02:16,197 INFO : Calling hook: mount_partitions 2011-09-18 16:02:16,198 INFO : Mounting target filesystems 2011-09-18 16:02:16,198 INFO : Creating disk image: "/tmp/tmpIT5W5T" of size: 8704MB 2011-09-18 16:02:16,215 INFO : Adding partition table to disk image: /tmp/tmpIT5W5T 2011-09-18 16:02:16,371 INFO : Adding type 4 partition to disk image: /tmp/tmpIT5W5T 2011-09-18 16:02:16,372 INFO : Partition at beginning of disk - reserving first cylinder 2011-09-18 16:02:16,408 INFO : Adding type 3 partition to disk image: /tmp/tmpIT5W5T 2011-09-18 16:02:16,413 INFO : [0] ../../libparted/filesys.c:148 (ped_file_system_type_get): File system alias linux-swap(new) is deprecated 2011-09-18 16:02:16,441 INFO : Creating loop devices corresponding to the created partitions 2011-09-18 16:02:16,464 INFO : Creating file systems 2011-09-18 16:02:16,520 INFO : mke2fs 1.41.14 (22-Dec-2010) 2011-09-18 16:02:19,962 INFO : mkswap: /dev/mapper/loop0p2: warning: don't erase bootbits sectors 2011-09-18 16:02:19,963 INFO : on whole disk. Use -f to force. 2011-09-18 16:02:22,590 INFO : Calling hook: install_bootloader 2011-09-18 16:02:41,449 INFO : Searching for GRUB installation directory ... found: /boot/grub 2011-09-18 16:02:41,488 INFO : Searching for default file ... Generating /boot/grub/default file and setting the default boot entry to 0 2011-09-18 16:02:41,489 INFO : Searching for GRUB installation directory ... found: /boot/grub 2011-09-18 16:02:41,493 INFO : Testing for an existing GRUB menu.lst file ... 2011-09-18 16:02:41,493 INFO : 2011-09-18 16:02:41,493 INFO : Could not find /boot/grub/menu.lst file. 2011-09-18 16:02:41,494 INFO : Generating /boot/grub/menu.lst 2011-09-18 16:02:41,543 INFO : Searching for splash image ... none found, skipping ... 2011-09-18 16:02:41,657 INFO : grep: /boot/config*: No such file or directory 2011-09-18 16:02:41,716 INFO : Updating /boot/grub/menu.lst ... done 2011-09-18 16:02:41,716 INFO : 2011-09-18 16:02:41,997 INFO : Searching for GRUB installation directory ... found: /boot/grub 2011-09-18 16:02:42,023 INFO : Searching for default file ... found: /boot/grub/default 2011-09-18 16:02:42,026 INFO : Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst 2011-09-18 16:02:42,100 INFO : Searching for splash image ... none found, skipping ... 2011-09-18 16:02:42,126 INFO : grep: /boot/config*: No such file or directory 2011-09-18 16:02:42,189 INFO : Updating /boot/grub/menu.lst ... done 2011-09-18 16:02:42,189 INFO : 2011-09-18 16:02:42,337 INFO : Searching for GRUB installation directory ... found: /boot/grub 2011-09-18 16:02:42,342 INFO : Calling hook: install_kernel 2011-09-18 16:02:55,122 INFO : Done. 2011-09-18 16:03:00,078 INFO : Running depmod. 2011-09-18 16:03:00,133 INFO : update-initramfs: Generating /boot/initrd.img-2.6.32-33-server 2011-09-18 16:03:01,875 INFO : Running postinst hook script /usr/sbin/update-grub. 2011-09-18 16:03:01,956 INFO : Searching for GRUB installation directory ... found: /boot/grub 2011-09-18 16:03:01,983 INFO : Searching for default file ... found: /boot/grub/default 2011-09-18 16:03:01,986 INFO : Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst 2011-09-18 16:03:02,046 INFO : Searching for splash image ... none found, skipping ... 2011-09-18 16:03:02,079 INFO : Found kernel: /boot/vmlinuz-2.6.32-33-server 2011-09-18 16:03:02,152 INFO : Replacing config file /var/run/grub/menu.lst with new version 2011-09-18 16:03:02,170 INFO : Updating /boot/grub/menu.lst ... done 2011-09-18 16:03:02,170 INFO : 2011-09-18 16:03:03,040 INFO : Calling hook: unmount_partitions 2011-09-18 16:03:03,040 INFO : Unmounting target filesystem 2011-09-18 16:03:06,713 INFO : Calling hook: convert 2011-09-18 16:03:06,714 INFO : Converting /tmp/tmpIT5W5T to qcow2, format ubuntu-kvm/tmpIT5W5T.qcow2 2011-09-18 16:03:15,344 INFO : Calling hook: fix_ownership 2011-09-18 16:03:15,345 INFO : Calling hook: deploy
启动日志：
/var/log/libvirt/qemu/stg-app2.log
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name stg-app2 -uuid 0c4d8375-49ae-9ddc-28ca-17ac3988ff4e -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/stg-app2.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot c -drive file=/home/jsharpe/stg-app2/ubuntu-kvm/tmpIT5W5T.qcow2,if=none,id=drive-ide0-0-0,format=qcow2 -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,fd=19,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:48:94:99,bus=pci.0,addr=0x3 -usb -vnc 127.0.0.1:3 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
看来，在纳蒂你必须指定桥（我想它曾经被假设）：
添加这个选项：
– 桥br0