route into netgraph?

Ruslan Ermilov ru at freebsd.org
Mon Apr 19 00:37:47 PDT 2004


On Mon, Apr 19, 2004 at 04:37:40AM +0400, Gleb Smirnoff wrote:
>   Dear networkers,
> 
>   does anyone can give me a hint? I want to inject some traffic with
> a specific destination to netgraph.
>   For example I want to route all traffic with dst 10.0.0.0/8 to my
> netgraph node, whereever it came from - came on interface or
> generated locally.
> 
>   I see only one way to do this - divert it with ipfw to ng_ksocket.
> 
> But, it'll be nice to use smth like:
> 
>   route add 10.0.0.0/8 -iface ng0
> 
> and receive packets on ng0's inet hook.
> 
> Any other ideas?
> 
So?  The above should just work, what's the problem?

# route add 10.0.0.0/8 -iface ng0
# ifconfig ng0 up
# ping -c1 10.0.0.1

# nghook -a ng0: inet
0000:  45 00 00 54 07 d5 00 00 40 01 68 d4 00 00 00 00  E..T.... at .h.....
0010:  0a 00 00 01 08 00 d9 8f 61 9e 00 00 c7 80 83 40  ........a......@
0020:  79 0d 0e 00 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13  y...............
0030:  14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23  ............ !"#
0040:  24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33  $%&'()*+,-./0123
0050:  34 35 36 37                                      4567


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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