Another message:
audit: type=1400 audit(1476791887.152:118): apparmor="DENIED" operation="mknod" profile="/usr/sbin/dnsmasq" name="/var/lib/lxd/networks/lxdbr0/dnsmasq.pid" pid=5480 comm="dnsmasq" requested_mask="c" denied_mask="c" fsuid=0 ouid=0
Another message:
audit: type=1400 audit(147679188 7.152:118) : apparmor="DENIED" operation="mknod" profile= "/usr/sbin/ dnsmasq" name="/ var/lib/ lxd/networks/ lxdbr0/ dnsmasq. pid" pid=5480 comm="dnsmasq" requested_mask="c" denied_mask="c" fsuid=0 ouid=0