Re: [edlug] "Nasty" Loopback network interface

[Steve C <stephen.catto@xxx.xxx.xxx>]

Hi,

Hope you got this okay, I can't remember which of my outgoing
addresses bounces off the list if your email addy isn't a trap.


Jarrod Lowe wrote:
> 
> Hi,
> 
> I am playing around with some network code, and it would help me
> immensly if I could have packets subjected to "nasty" network things
> that can happen in real networks.
> 
> I vaguly remember something about a linux module that creates a
> loopback network interface, but which would randomly delay and
<snip>

NIST Net might be what you are thinking about, can't remember about
the
loopback bit however.

http://dns.antd.nist.gov/nistnet/

NIST Net is implemented as a kernel module extension to the Linux
operating system and an X Window System-based user interface
application. In use, the tool allows an inexpensive PC-based router
to emulate numerous complex performance scenarios, including: tunable
packet delay distributions, congestion and background loss, bandwidth
limitation, and packet reordering / duplication. The X interface
allows the user to select and monitor specific traffic streams
passing through the router and to apply selected performance
"effects" to the IP packets of the stream. ....



Steve C
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