- RHEL/OL 7 doesn't have the ifconfig command by default so have the
lxc-net script check for its existence before use, and fall back
to using the ip command if ifconfig is not available
- When lxc-net is run from systemd on a system with selinux enabled,
the mkdir -p ${varrun} will create /run/lxc as init_var_run_t which
dnsmasq can't write its pid into, so we restorecon it
after creation (to var_run_t)
- The lxc-net systemd .service file needs an [Install] section so that
"systemctl enable lxc-net" will work