root@ubuntu:~$ brctl show
 bridge name     bridge id               STP enabled     interfaces
 lxcbr0          8000.000000000000       no

 root@ubuntu:~# cat /etc/default/lxc-net | grep -v -e "#"
 USE_LXC_BRIDGE="true"

 LXC_BRIDGE="lxcbr0"
 LXC_ADDR="10.0.3.1"
 LXC_NETMASK="255.255.255.0"
 LXC_NETWORK="10.0.3.0/24"
 LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
 LXC_DHCP_MAX="253"

 root@ubuntu:~# iptables -t nat -L POSTROUTING
 Chain POSTROUTING (policy ACCEPT)
 target     prot opt source               destination
 MASQUERADE  all  --  10.0.3.0/24         !10.0.3.0/24

 root@ubuntu:~# ps -eaf | grep dnsmas
 lxc-dns+  1047     1  0 18:24 ?        00:00:00 dnsmasq -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=/run/lxc/dnsmasq.pid --conf-file= --listen-address 10.0.3.1 --dhcp-range 10.0.3.2,10.0.3.254 --dhcp-lease-max=253 --dhcp-no-override --except-interface=lo --interface=lxcbr0 --dhcp-leasefile=/var/lib/misc/dnsmasq.lxcbr0.leases --dhcp-authoritative