In the juju log we still see the network config get generated: 2016-04-05 12:58:04 DEBUG juju.cloudconfig.containerinit container_userdata.go:142 generated network config from []network.InterfaceInfo{network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.10.0/24", NetworkName:"", ProviderId:"805", ProviderSubnetId:"4", ProviderSpaceId:"", ProviderVLANId:"5006", ProviderAddressId:"2333", AvailabilityZones:[]string(nil), VLANTag:10, InterfaceName:"eth0", ParentInterfaceName:"br-eth0.10", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.10.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.10.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.12.0/24", NetworkName:"", ProviderId:"806", ProviderSubnetId:"6", ProviderSpaceId:"", ProviderVLANId:"5008", ProviderAddressId:"2326", AvailabilityZones:[]string(nil), VLANTag:12, InterfaceName:"eth1", ParentInterfaceName:"br-eth0.12", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.12.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.16.0/21", NetworkName:"", ProviderId:"807", ProviderSubnetId:"10", ProviderSpaceId:"", ProviderVLANId:"5012", ProviderAddressId:"2328", AvailabilityZones:[]string(nil), VLANTag:13, InterfaceName:"eth2", ParentInterfaceName:"br-eth0.13", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.16.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.24.0/21", NetworkName:"", ProviderId:"808", ProviderSubnetId:"11", ProviderSpaceId:"", ProviderVLANId:"5013", ProviderAddressId:"2330", AvailabilityZones:[]string(nil), VLANTag:14, InterfaceName:"eth3", ParentInterfaceName:"br-eth0.14", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.24.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.32.0/21", NetworkName:"", ProviderId:"809", ProviderSubnetId:"12", ProviderSpaceId:"", ProviderVLANId:"5015", ProviderAddressId:"2332", AvailabilityZones:[]string(nil), VLANTag:15, InterfaceName:"eth4", ParentInterfaceName:"br-eth0.15", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.32.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"10.17.20.0/24", NetworkName:"", ProviderId:"810", ProviderSubnetId:"1", ProviderSpaceId:"", ProviderVLANId:"0", ProviderAddressId:"2335", AvailabilityZones:[]string(nil), VLANTag:0, InterfaceName:"eth5", ParentInterfaceName:"br-eth0", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:10.17.20.214, DNSServers:[]network.Address{local-cloud:10.17.20.200}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"", CIDR:"192.168.11.0/24", NetworkName:"", ProviderId:"811", ProviderSubnetId:"5", ProviderSpaceId:"", ProviderVLANId:"5007", ProviderAddressId:"2337", AvailabilityZones:[]string(nil), VLANTag:11, InterfaceName:"eth6", ParentInterfaceName:"br-eth0.11", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.11.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:, ExtraConfig:map[string]string(nil)}} using[]network.InterfaceInfo{network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:05:78:e0", CIDR:"192.168.10.0/24", NetworkName:"", ProviderId:"805", ProviderSubnetId:"4", ProviderSpaceId:"", ProviderVLANId:"5006", ProviderAddressId:"2333", AvailabilityZones:[]string(nil), VLANTag:10, InterfaceName:"eth0", ParentInterfaceName:"br-eth0.10", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.10.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.10.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:e8:55:50", CIDR:"192.168.12.0/24", NetworkName:"", ProviderId:"806", ProviderSubnetId:"6", ProviderSpaceId:"", ProviderVLANId:"5008", ProviderAddressId:"2326", AvailabilityZones:[]string(nil), VLANTag:12, InterfaceName:"eth1", ParentInterfaceName:"br-eth0.12", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.12.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.12.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:e0:e3:52", CIDR:"192.168.16.0/21", NetworkName:"", ProviderId:"807", ProviderSubnetId:"10", ProviderSpaceId:"", ProviderVLANId:"5012", ProviderAddressId:"2328", AvailabilityZones:[]string(nil), VLANTag:13, InterfaceName:"eth2", ParentInterfaceName:"br-eth0.13", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.16.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.16.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:c4:5d:bd", CIDR:"192.168.24.0/21", NetworkName:"", ProviderId:"808", ProviderSubnetId:"11", ProviderSpaceId:"", ProviderVLANId:"5013", ProviderAddressId:"2330", AvailabilityZones:[]string(nil), VLANTag:14, InterfaceName:"eth3", ParentInterfaceName:"br-eth0.14", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.24.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.24.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:0e:6d:a4", CIDR:"192.168.32.0/21", NetworkName:"", ProviderId:"809", ProviderSubnetId:"12", ProviderSpaceId:"", ProviderVLANId:"5015", ProviderAddressId:"2332", AvailabilityZones:[]string(nil), VLANTag:15, InterfaceName:"eth4", ParentInterfaceName:"br-eth0.15", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.32.101, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.32.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:b1:ef:8f", CIDR:"10.17.20.0/24", NetworkName:"", ProviderId:"810", ProviderSubnetId:"1", ProviderSpaceId:"", ProviderVLANId:"0", ProviderAddressId:"2335", AvailabilityZones:[]string(nil), VLANTag:0, InterfaceName:"eth5", ParentInterfaceName:"br-eth0", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:10.17.20.214, DNSServers:[]network.Address{local-cloud:10.17.20.200}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:10.17.20.1, ExtraConfig:map[string]string(nil)}, network.InterfaceInfo{DeviceIndex:0, MACAddress:"00:16:3e:25:5a:21", CIDR:"192.168.11.0/24", NetworkName:"", ProviderId:"811", ProviderSubnetId:"5", ProviderSpaceId:"", ProviderVLANId:"5007", ProviderAddressId:"2337", AvailabilityZones:[]string(nil), VLANTag:11, InterfaceName:"eth6", ParentInterfaceName:"br-eth0.11", InterfaceType:"ethernet", Disabled:false, NoAutoStart:false, ConfigType:"static", Address:local-cloud:192.168.11.103, DNSServers:[]network.Address{}, MTU:1500, DNSSearchDomains:[]string(nil), GatewayAddress:local-cloud:192.168.11.1, ExtraConfig:map[string]string(nil)}}: auto lo iface lo inet loopback auto eth0 iface eth0 inet manual pre-up ip address add 192.168.10.103/24 dev eth0 || true up ip route replace 192.168.10.0/24 dev eth0 || true down ip route del 192.168.10.0/24 dev eth0 || true post-down address del 192.168.10.103/24 dev eth0 || true up ip route replace default via 192.168.10.1 || true down ip route del default via 192.168.10.1 || true auto eth1 iface eth1 inet manual pre-up ip address add 192.168.12.103/24 dev eth1 || true up ip route replace 192.168.12.0/24 dev eth1 || true down ip route del 192.168.12.0/24 dev eth1 || true post-down address del 192.168.12.103/24 dev eth1 || true auto eth2 iface eth2 inet manual pre-up ip address add 192.168.16.101/21 dev eth2 || true up ip route replace 192.168.16.0/21 dev eth2 || true down ip route del 192.168.16.0/21 dev eth2 || true post-down address del 192.168.16.101/21 dev eth2 || true auto eth3 iface eth3 inet manual pre-up ip address add 192.168.24.101/21 dev eth3 || true up ip route replace 192.168.24.0/21 dev eth3 || true down ip route del 192.168.24.0/21 dev eth3 || true post-down address del 192.168.24.101/21 dev eth3 || true auto eth4 iface eth4 inet manual pre-up ip address add 192.168.32.101/21 dev eth4 || true up ip route replace 192.168.32.0/21 dev eth4 || true down ip route del 192.168.32.0/21 dev eth4 || true post-down address del 192.168.32.101/21 dev eth4 || true auto eth5 iface eth5 inet manual dns-nameservers 10.17.20.200 pre-up ip address add 10.17.20.214/24 dev eth5 || true up ip route replace 10.17.20.0/24 dev eth5 || true down ip route del 10.17.20.0/24 dev eth5 || true post-down address del 10.17.20.214/24 dev eth5 || true auto eth6 iface eth6 inet manual pre-up ip address add 192.168.11.103/24 dev eth6 || true up ip route replace 192.168.11.0/24 dev eth6 || true down ip route del 192.168.11.0/24 dev eth6 || true post-down address del 192.168.11.103/24 dev eth6 || true but perhaps this now gets overwritten when the container starts.