Re: Do you know the TCP stack? (127.x.x.x routing)

From: Thomas Graf
Date: Sun Mar 06 2005 - 15:45:25 EST


* Andi Kleen <m1y8d0mss2.fsf@xxxxxx> 2005-03-06 21:19
> Zdenek Radouch <zdenek@xxxxxxx> writes:
> >
> > There is no doubt that the 127.x net is treated in a special
> > way. If I have to believe what I just learned, then the 127
>
> It is. 127.* is hardcoded in the routing engine and e.g.
> it won't accept outside packets with a loopback address.
>
> Most likely it's enough to change the "LOOPBACK" macro to allow
> parts of the Class A to be used for other purposes.

Yes, it will work around the martian route and arp checks but
will probably break quite a few usersapce applications.
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