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I have a 64bit Ubuntu server running 12.04 LTS Headless. I have installed and am using a bridged network in support of a VM the server hosts.

I wanted to setup BIND9 for my local lan and followed some very detailed instructions. However when I modified the /etc/network/interfaces file as directed, the KVM failed to load its network interfaces and I began to get the "Waiting for network" boot message. The server would eventually boot, but I could no longer access the VM via the bridged network and BIND was still not setup correctly.

The instructions I followed are here: http://lani78.wordpress.com/2012/07/22/setting-up-a-dns-for-the-local-network-on-the-ubuntu-12-04-precise-pangolin-server/

My /etc/network/interfaces file which works is as follows:

auto lo
iface lo inet loopback
pre-up /sbin/ethtool -s eth0 speed 1000 duplex full

auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
address 192.168.1.60
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
dns-nameservers 24.25.5.60 24.25.5.61
dns-search nc.rr.com
bridge_ports eth0
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

The changes I made that caused the KVM not to work are as follows:

auto lo
iface lo inet loopback
pre-up /sbin/ethtool -s eth0 speed 1000 duplex full

auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
address 192.168.1.60
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1
dns-nameservers 127.0.0.1
dns-search rp2c.lan
dns-domain rp2c.lan
bridge_ports eth0
bridge_fd 9
bridge_hello 2
bridge_maxage 12
bridge_stp off

I am not sure what I did wrong. dig reports no errors and I can forward and reverse lookup my local hosts, but I lose the KVM br0 connectivity.

Any assistance would be appreciated.

Robert Porter

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