[Nottingham] Easy network programming

Martin martin at ml1.co.uk
Sat May 12 22:59:12 BST 2007

Charles Samuels wrote:
> (extra points if you can use this information to figure out the manufacturer 
> of my ethernet cards :)
> charles at arkimedes:~$ ssh fe80::209:5bff:fe19:de81%eth0
> What are the implications of this, you ask?
> Well, first of all, you can ssh into not only a machine that you don't know 
> it's ip address for (like you can with broadcast pings in IPv4), but (Set 
> your faces to stun!!!) you can ping and ssh into machines whose network 
> interfaces haven't yet even been configured. In other words, you can connect 

OK, so is that using a default of an IPv6 prefix + MAC?

And what if sshd isn't configured or up yet?...

Still interesting.

When might the rest of the world move over to IPv6 so that we can at
long last forget all the NAT fun and distraction?...


Martin Lomas
martin at ml1.co.uk

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