On Jul 11, 2008, at 05:47, Steve Bertrand wrote:
Doug Hardie wrote:
Mac OS-X does a form of auto discovery on IPv6 where the machines
on a local network add the machine name to the ndp table when they
see activity from that machine.
...FreeBSD does this as well (Neighbor Discovery).
pearl# ndp -a
Neighbor Linklayer Address Netif Expire S Flags
lanx.eagle.ca 0:b:46:3e:f3:41 fxp0 23h59m41s S R
vandetta.ibctech.ca 0:f:b5:80:58:77 fxp0 15s R
v6.ibctech.ca 0:e:c:6c:e9:62 fxp0 permanent R
v6.ibctech.ca 0:e:c:6c:e9:62 fxp0 permanent R
...etc, etc.
If you don't have DNS configured, or you do not have reverse DNS
entries for the host IPs you are talking to, then only the IP will
be listed above.
So far I only have a rudimentary IPv6 configuration on FreeBSD 7
running and it only sees the IP address, and then only after I ping
the other end.
What you see above is normal functionality of the IPv6 Neighbor
Discovery Protocol (RFC-4861). The 'neighbor cache' only gets
populated with entries when IP communication takes place, or you
receive/accept a router advertisement with a list of prefixes (ndp -
p).
The fact that names are not appearing is due to (mis|non)
configuration of DNS either for the resolver on the box itself, or
reverse DNS missing for the LAN IPs as stated above.
To add a DNS server in FreeBSD, simply:
# echo "nameserver ip.of.name.server" >> /etc/resolv.conf
I couldn't find anything in /etc/defaults that seems to address
auto discovery. Is this something I have missed or what?
Perhaps you are referring to 'Auto Configuration' (RFC-4862)?
Neighbor Discovery and Auto Configuration perform different tasks,
but the former is required by the latter.
Can you describe exactly what you want to achieve? Is it only the
name resolution problem you described above?
I originally thought it was a DNS issue also. There is no DNS server
on the network. However, that doesn't seem to bother the Macs as they
quickly pick up the names of the machines and disseminate them to each
other without a DNS server. This is a test setup and systems come and
go frequently. I don't want the hassle of having to maintain a DNS
server that would require modes several times a day.
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