Comment 7 for bug 1512782

attached machine-0.log as a gzipped file, it was 40MB.

as to your other questions:

This is using the local provider. Here's the environments.yaml:

    default: local

    environments:
      local:
        type: local
        container: kvm
        lxc-clone: true
        authorized-keys-path: ~/.ssh/id_rsa.pub
        network-bridge: lxcbr0
        default-series: trusty
        admin-secret: "ubuntu"
        no-proxy: localhost

It is using nested containers, yes. There's a top level container,
inside which we install juju with the above env.yaml, and deploy from in there.
So the containers which juju creates are nested one level deep.

Note that the machines created by juju in earlier logs had 10.0.6.x,
but the latest one has 10.0.7.x.

We explicitly set lxcbr0 to 10.0.N.x where N is 6 or
greater, to avoid clashing with other installs when we add a static
route to the container network from the host. We manually set the lxc-net
config in the container. In this case it's the following:

    ubuntu@openstack-single-ubuntu:~$ cat /etc/default/lxc-net
    # Custom lxc-net for Single Installer
    USE_LXC_BRIDGE="true"
    LXC_BRIDGE="lxcbr0"
    LXC_ADDR=10.0.7.1
    LXC_NETMASK=255.255.255.0
    LXC_NETWORK=10.0.7.0/24
    LXC_DHCP_RANGE="10.0.7.2,10.0.7.254"
    LXC_DHCP_MAX="196"
    #LXC_DHCP_CONFILE=/etc/lxc/dnsmasq.conf
    #LXC_DOMAIN="lxc"

Here's some further network info. 'ancient-spot' is the top level
host. The top level container is called 'openstack-single-ubuntu'.

    ubuntu@ancient-spot:~⟫ sudo ip addr show
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
        link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
        inet 127.0.0.1/8 scope host lo
           valid_lft forever preferred_lft forever
        inet6 ::1/128 scope host
           valid_lft forever preferred_lft forever
    2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
        link/ether ec:a8:6b:fb:3a:5e brd ff:ff:ff:ff:ff:ff
        inet 172.16.0.66/24 brd 172.16.0.255 scope global eth0
           valid_lft forever preferred_lft forever
        inet6 fe80::eea8:6bff:fefb:3a5e/64 scope link
           valid_lft forever preferred_lft forever
    3: lxcbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
        link/ether fe:bb:ba:5e:ec:13 brd ff:ff:ff:ff:ff:ff
        inet 10.0.3.1/24 scope global lxcbr0
           valid_lft forever preferred_lft forever
        inet6 fe80::f897:dff:fe56:8118/64 scope link
           valid_lft forever preferred_lft forever
    6: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
        link/ether 52:54:00:cf:09:a4 brd ff:ff:ff:ff:ff:ff
        inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
           valid_lft forever preferred_lft forever
    7: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 500
        link/ether 52:54:00:cf:09:a4 brd ff:ff:ff:ff:ff:ff
    17: vethPE50B4@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master lxcbr0 state UP group default qlen 1000
        link/ether fe:bb:ba:5e:ec:13 brd ff:ff:ff:ff:ff:ff link-netnsid 0
        inet6 fe80::fcbb:baff:fe5e:ec13/64 scope link
           valid_lft forever preferred_lft forever

    ubuntu@ancient-spot:~⟫ sudo ip route show
    default via 172.16.0.1 dev eth0
    10.0.3.0/24 dev lxcbr0 proto kernel scope link src 10.0.3.1
    10.0.6.0/24 via 10.0.3.201 dev lxcbr0
    10.0.7.0/24 via 10.0.3.45 dev lxcbr0
    172.16.0.0/24 dev eth0 proto kernel scope link src 172.16.0.66
    192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1

    ubuntu@ancient-spot:~⟫ sudo lxc-ls -f
    NAME STATE IPV4 IPV6 GROUPS AUTOSTART
    ---------------------------------------------------------------------------------------------
    openstack-single-ubuntu RUNNING 10.0.3.45, 10.0.7.1, 192.168.122.1 - - YES

I don't know if it's just wily.