Hi Martin, the host I had used for testing is off, so I had to switch. After disabling the packet filter I see:
# tcpdump -i re0 -env icmp6 tcpdump: listening on re0, link-type EN10MB 20:58:08.865529 20:cf:30:e8:0d:58 52:54:00:2e:f3:25 86dd 118: fe80::22cf:30ff:fee8:d58 > fe80::5054:ff:fe2e:f325: icmp6: echo request (id:794e seq:49) [flowlabel 0x32128] (len 64, hlim 64) 20:58:08.865643 52:54:00:2e:f3:25 20:cf:30:e8:0d:58 86dd 118: ::1 > fe80::22cf:30ff:fee8:d58: icmp6: echo reply (id:794e seq:49) (len 64, hlim 64) 20:58:09.889659 20:cf:30:e8:0d:58 52:54:00:2e:f3:25 86dd 118: fe80::22cf:30ff:fee8:d58 > fe80::5054:ff:fe2e:f325: icmp6: echo request (id:794e seq:50) [flowlabel 0x32128] (len 64, hlim 64) 20:58:09.889738 52:54:00:2e:f3:25 20:cf:30:e8:0d:58 86dd 118: ::1 > fe80::22cf:30ff:fee8:d58: icmp6: echo reply (id:794e seq:50) (len 64, hlim 64) 20:58:10.913592 20:cf:30:e8:0d:58 52:54:00:2e:f3:25 86dd 118: fe80::22cf:30ff:fee8:d58 > fe80::5054:ff:fe2e:f325: icmp6: echo request (id:794e seq:51) [flowlabel 0x32128] (len 64, hlim 64) 20:58:10.913704 52:54:00:2e:f3:25 20:cf:30:e8:0d:58 86dd 118: ::1 > fe80::22cf:30ff:fee8:d58: icmp6: echo reply (id:794e seq:51) (len 64, hlim 64) 20:58:11.864126 00:20:4e:6c:8c:3b 33:33:00:00:00:02 86dd 70: fe80::220:4eff:fe6c:8c3b > ff02::2: icmp6: router solicitation (src lladdr: 00:20:4e:6c:8c:3b) [icmp6 cksum ok] (len 16, hlim 255) 20:58:11.937665 20:cf:30:e8:0d:58 52:54:00:2e:f3:25 86dd 118: fe80::22cf:30ff:fee8:d58 > fe80::5054:ff:fe2e:f325: icmp6: echo request (id:794e seq:52) [flowlabel 0x32128] (len 64, hlim 64) 20:58:11.937743 52:54:00:2e:f3:25 20:cf:30:e8:0d:58 86dd 118: ::1 > fe80::22cf:30ff:fee8:d58: icmp6: echo reply (id:794e seq:52) (len 64, hlim 64) ^C 161 packets received by filter 0 packets dropped by kernel # route -n show -inet6 Routing tables Internet6: Destination Gateway Flags Refs Use Mtu Prio Iface ::/96 ::1 UGRS 0 0 32768 8 lo0 ::/104 ::1 UGRS 0 0 32768 8 lo0 ::1 ::1 UHhl 14 294 32768 1 lo0 ::127.0.0.0/104 ::1 UGRS 0 0 32768 8 lo0 ::224.0.0.0/100 ::1 UGRS 0 0 32768 8 lo0 ::255.0.0.0/104 ::1 UGRS 0 0 32768 8 lo0 ::ffff:0.0.0.0/96 ::1 UGRS 0 0 32768 8 lo0 2002::/24 ::1 UGRS 0 0 32768 8 lo0 2002:7f00::/24 ::1 UGRS 0 0 32768 8 lo0 2002:e000::/20 ::1 UGRS 0 0 32768 8 lo0 2002:ff00::/24 ::1 UGRS 0 0 32768 8 lo0 fe80::/10 ::1 UGRS 0 424 32768 8 lo0 fec0::/10 ::1 UGRS 0 0 32768 8 lo0 fe80::%re0/64 fe80::5054:ff:fe2e:f325%re0 UCn 2 2 - 4 re0 fe80::22cf:30ff:fee8:d58%re0 20:cf:30:e8:0d:58 UHLc 0 73 - 3 re0 fe80::5054:ff:fe2e:f325%re0 52:54:00:2e:f3:25 UHLl 0 153 - 1 re0 fe80::56be:f7ff:fe09:30bd%re0 54:be:f7:09:30:bd UHLc 0 109 - 3 re0 fe80::1%lo0 fe80::1%lo0 UHl 0 0 32768 1 lo0 ff01::/16 ::1 UGRS 0 1 32768 8 lo0 ff01::%re0/32 fe80::5054:ff:fe2e:f325%re0 Um 0 0 - 4 re0 ff01::%lo0/32 ::1 Um 0 1 32768 4 lo0 ff02::/16 ::1 UGRS 0 1 32768 8 lo0 ff02::%re0/32 fe80::5054:ff:fe2e:f325%re0 Um 0 0 - 4 re0 ff02::%lo0/32 ::1 Um 0 1 32768 4 lo0 Unfortunately I don't have a test host running 6.0 at the moment. Regards Harri