OK trying the following had not effect, still not working.
auto eth1 iface eth1 inet manual address 0.0.0.0
auto br0 iface br0 inet static address 10.42.1.28 netmask 255.255.254.0 network 10.42.4.0 bridge_ports eth1 bridge_fd 9 bridge_hello 2 bridge_maxwait 12 bridge_stp off
OK trying the following had not effect, still not working.
auto eth1
iface eth1 inet manual
address 0.0.0.0
auto br0
iface br0 inet static
address 10.42.1.28
netmask 255.255.254.0
network 10.42.4.0
bridge_ports eth1
bridge_fd 9
bridge_hello 2
bridge_maxwait 12
bridge_stp off