On Monday 10 November 2003 11:34 pm, Simon Kitching wrote:
> On Tue, 2003-11-11 at 12:21, Antony Stone wrote:
> > On Monday 10 November 2003 10:25 pm, Marc Lucke wrote:
> > > Antony - my thanks to you. I rather suspected your answer would be
> > > true. My problem is that I am getting very large differences in the
> > > usage I track using iptables and the usage that my ISP reports.
> > > iptables reports much more traffic - up to 12% in fact. I have checked
> > > with the ISP who say they too only count layer 3 IP.
> >
> > 12% is a lot, and the fact that you think you have 12% more traffic than
> > your ISP does is more strange than if it were the other way around.
>
> What about traffic from your host back to itself?
That should go via interface lo, not via eth0.
> For example, GNOME heavily uses the ORBIT corba server, which uses
> TCP/IP to communicate between interacting applications.
>
> Maybe you could add a separate rule for traffic from 127.0.0.1 and to
> your local host address back to the local machine, to measure that?
The routing table entry for 127.0.0.0/8 should send all this traffic via the
loopback interface - this should not be counted by anything looking at the
ethernet devices.
Antony.
--
In science, one tries to tell people
in such a way as to be understood by everyone
something that no-one ever knew before.
In poetry, it is the exact opposite.
- Paul Dirac
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