Re: First line in /etc/hosts
> > > Machines don't have IP numbers. Interfaces have IP numbers. Every machine
> > Actually, that's not quite the case (as a number of users of Linux's ARP
> > implementation have found), though it's a good approximation.
> Indeed. For Linux, nodes have IP *numbers* which are all equal, and you have
> to take great pains to make sure it behaves in any different way. iproute2,
> arptables and the relative black magic of arp_filter are your only ways to
> try to influence that. Usual route, ifconfig, etc are useless.
This portion is unclear to me; could you shed some light ?
Do you mean:
1. on linux there is a principal IP address that is assigned to a
node regardless of NIC due to the implementation of ARP etc.
2. on linux there is some magic IP *number* that is assigned to a
node; and IP addresses are assigned to individual NICs.
-> if so, what is a IP number?