*N IE 2001:db8:100::/64              fe80::b44b:a1ff:fe48:3d69 r4-eth0 00:01:45
 N E1 2001:db8:100::/64              fe80::b44b:a1ff:fe48:3d69 r4-eth0 00:01:45
*N IA 2001:db8:200::/64              ::                        r4-eth0 00:01:50
 N E1 2001:db8:200::/64              fe80::b44b:a1ff:fe48:3d69 r4-eth0 00:01:45
*N IA 2001:db8:300::/64              ::                        r4-eth1 00:01:50
