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NDPMon

IPv6 Neighbor Discovery Protocol Monitor
"Arpwatch for IPv6"

http://ndpmon.sourceforge.net/

Example /etc/ndpmon/config_ndpmon.xml file:

Discovering MAC

(linux) 1 ~# ping -c1 128.118.27.1
PING 128.118.27.1 (128.118.27.1) 56(84) bytes of data.
64 bytes from 128.118.27.1: icmp_seq=1 ttl=255 time=0.412 ms

--- 128.118.27.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.412/0.412/0.412/0.000 ms
(life) 2 ~# arp 128.118.27.1
Address                  HWtype  HWaddress           Flags Mask            Iface
Computer2-TenGigabitEth  ether   00:0F:35:67:6F:00   C                     eth0

Discovering LLA

(linux) 3 ~# ping6 -Ieth0 -c1 ff02::2
PING ff02::2(ff02::2) from fe80::209:6bff:fef1:8bb0 eth0: 56 data bytes
64 bytes from fe80::20f:35ff:fe67:6f00: icmp_seq=0 ttl=64 time=0.325 ms

--- ff02::2 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.325/0.325/0.325/0.000 ms, pipe 2
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  1. Has anyone looked into adding ndp support to arpwatch that you know of? I've tried to get ndpmon going on our monitoring host here (Solaris 10U5), and the dependencies alone are scary...