ARP, LLDP and GPTP functions have dummies in case of being disabled so
let's use IS_ENABLED() accordingly.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Add basic IPv4 Link Local support as described in RFC 3927.
Signed-off-by: Matthias Boesl <matthias.boesl@gmail.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>