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tcpdump doesn't work under RH 6.1?

tcpdump doesn't work under RH 6.1?

Post by cwri.. » Thu, 30 Mar 2000 04:00:00



Hello,

Ever since I installed RH 6.1, I've been unable to use tcpdump.  As
root, I type

   tcpdump -i eth0

The response is

   tcpdump: socket: Invalid argument

I suspect this is a kernel config problem, but I'm not in the position
ot test different kernel versions at the moment.  Anyone have any idea
why this happens?  The RedHat errata mentions nothing of this, so I
think I might have configured it out of the kernel - but I've never
had this problem before (in kernel 2.0.*), so I don't know what the
error is.

Thanks for any help.

Charles R. Wright

 
 
 
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tcpdump doesn't work under RH 6.1?

Post by Peter Pommeren » Fri, 31 Mar 2000 04:00:00



> Hello,

> Ever since I installed RH 6.1, I've been unable to use tcpdump.  As
> root, I type

>    tcpdump -i eth0

> The response is

>    tcpdump: socket: Invalid argument

> I suspect this is a kernel config problem, but I'm not in the position
> ot test different kernel versions at the moment.  Anyone have any idea
> why this happens?  The RedHat errata mentions nothing of this, so I
> think I might have configured it out of the kernel - but I've never
> had this problem before (in kernel 2.0.*), so I don't know what the
> error is.

> Thanks for any help.

> Charles R. Wright

$ grep -3 'tcpdump' /usr/src/linux/Documentation/Configure.help
CONFIG_PACKET
  The Packet protocol is used by applications which communicate
  directly with network devices without an intermediate network
  protocol implemented in the kernel, e.g. tcpdump. If you want them
  to work, choose Y. This driver is also available as a module called
  af_packet.o ( = code which can be inserted in and removed from the
  running kernel whenever you want). If you want to compile it as a

Hope that helps.

Peter Pommerenk
peterpatpinnnet

 
 
 
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