Why do packets to 127.255.255.255 cause dial-up?
paul at xciv.org
Thu Mar 30 11:26:57 BST 2000
Nik Clayton <nik at freebsd.org> wrote:
> This is a bit of a noddy question, but I'm damned if I'm exposing my
> ignorance to the entirety of the world via -questions. The whole of
> the UK (and certain small European countries, hi Brad) should be more
> than sufficient.
> I'm going to track down the whys and wheres of Samba doing this in a minute,
> and block it. That should be fairly easy with some dial filters.
I saw this the other day, and it was caused by an /etc/hosts that
looked something like this:
127.0.0.1 localhost your.host.name
So, it seems to pick up the IP network it's on from the IP of the
Which may be your problem, may be not.
> What I don't understand is how packets for the 127/8 broadcast address are
> getting on to tun0 in the first place. Why aren't they staying on lo0 like
> they should be?
That is odd.
> There's obviously a gap in my understanding of how IP works.
FWIW, I would agree with you.
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