brendand@brendand-T450:~$ systemctl status lxd-bridge.service 
● lxd-bridge.service - LXD - network bridge
   Loaded: loaded (/lib/systemd/system/lxd-bridge.service; static; vendor preset
   Active: active (exited) since Tue 2016-05-17 11:16:24 BST; 20min ago
     Docs: man:lxd(1)
  Process: 6767 ExecStart=/usr/lib/lxd/lxd-bridge.start (code=exited, status=0/S
 Main PID: 6767 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 512)
   Memory: 0B
      CPU: 0
   CGroup: /system.slice/lxd-bridge.service

May 17 11:16:24 brendand-T450 systemd[1]: Starting LXD - network bridge...
May 17 11:16:24 brendand-T450 lxd-bridge.start[6767]: dnsmasq: failed to create 
May 17 11:16:24 brendand-T450 lxd-bridge.start[6767]: Failed to setup lxd-bridge
May 17 11:16:24 brendand-T450 systemd[1]: Started LXD - network bridge.