Spin up a container from an image:

$ sudo lxc launch images:alpine/3.10/amd64 demo

Run a shell in the container:

$ sudo lxc exec demo sh

How TF do you ping / update?

Enable forwarding at the kernel level

# echo 1 > /proc/sys/net/ipv4/ip_forward
# echo 1 > /proc/sys/net/ipv6/conf/all/forwarding

Enable forwarding to and from the network bridge

iptables -A FORWARD -o lxdbr0 -j ACCEPT
iptables -A FORWARD -i lxdbr0 -j ACCEPT

TODO you may have to set up masquerade and shit if you want to poke holes in the NAT between the scary outside and the safe LXD network

lxc network attach lxdbr0 c1 eth0

lxc config device set c1 eth0 name eth0

lxc config device set c1 eth0 host_name veth000001

lxc config device set c1 eth0 ipv4.address 10.38.15.11