Permanent NDP entries overriden by ICMPv6 Neighbor Advertisement

[Martin Beran]

Hi,

when I set a permanent NDP entry by command

ndp -s <ip> <mac>

the record is denoted "permanent", by the specified MAC address is
overriden by a received neighbor advisory for the same IP address, but
with different MAC address. I tried this on FreeBSD 12.1-p2. Is this the
intended behavior, or should a "permanent" entry be really permanent?

-- 
Martin Beran