pr@root:>ndd -get /dev/arp arp_cache_report | grep -i perm
ifname proto addr proto mask hardware addr flags
lan2 192.168.030.220 255.255.255.255 00:1:4b:06:a:7 PERM PUBLISH LOCAL
lan2 224.000.000.000 240.000.000.000 01:00:5e:00:00:0 PERM MAPPING
lan0 09.007.115.102 255.255.255.255 00:1:4:06:a:c PERM PUBLISH LOCAL
lan0 224.000.000.000 240.000.000.000 01:00:5e:00:00:00 PERM MAPPING