Re: [Tcpreplay-users] Does 1.4.4 require libpcap .7.2 ?

[Aaron T. <at...@po...>]

Isn't the default libpcap under obsd located in /usr?  I assume you
installed the newer copy somplace else.  You should be able to use:

--with-libpcap=3D/some/place/else

That *might* work.  Right now, I haven't done much work on getting
configure to properly use the correct libraries/includes when two
different copies exist.  It still really depends on the search path
order for your libraries/includes.  The --with-libpcap & --with-libnet
features are really for giving configure "hints" when people install
them in strange locations (like /opt).

Like I said, hopefully the next version will deal with this sorta thing
better.

-Aaron

On Fri, Jun 20, 2003 at 11:54:10AM -0400, Matt Van Mater wrote:
> Yeah, OpenBSD comes with libpcap .5 and tcpdump 3.4.0 in the default=20
> install (apparently they do some modifications to it before introducing i=
t=20
> into the system).  I think they use libpcap pretty extensively in PF (the=
=20
> packet filter), especially since they record all the firewall logs in pca=
p=20
> format because it is more efficient than ascii (or thats what they say, i=
=20
> don't know)
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> For future reference, how do I specify during the configure process which=
=20
> library and header files to use?  tcpreplay hasn't crashed on me while=20
> using the .5 version of libpcap but I'd like to know for when v1.5.x of=
=20
> tcpreplay comes out.
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> Matt
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> ----Original Message Follows----
> From: Aaron Turner <at...@po...>
> Reply-To: Aaron Turner <at...@po...>
> To: Matt Van Mater <nu...@ho...>
> CC: tcp...@li...
> Subject: Re: [Tcpreplay-users] Does 1.4.4 require libpcap .7.2 ?
> Date: Fri, 20 Jun 2003 09:04:14 -0700
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> Hey Matt,
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> Short answer: not a problem, unless it's crashing on you.
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> Long answer:
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> Sounds like you've got two copies of libpcap, and the order of library
> include directories is finding the old version first.  Basically, the
> library version information is stored in the library, not the header
> file, so you're prolly using the 0.7 header and the 0.5 library.
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> Honestly, though, 1.4.x doesn't really care what version of libpcap
> you're running- At least I'm not aware of any missing features in 0.5.x
> that tcpreplay needs.  However, the 1.5.x version of tcpreplay will need
> at least libpcap 0.6.x because they added some new DLT types which
> tcpreplay will need.
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> I'll see if I can handle this sort of thing better in the next version.
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> -Aaron
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> On Fri, Jun 20, 2003 at 09:14:05AM -0400, Matt Van Mater wrote:
> > I'm running OpenBSD 3.3 and installed libpcap .7.2 and libnet 1.1.0 from
> > source.  Even when I run ./configure --with-libnet=3D/usr=20
> --with-libpcap=3D/usr
> > tcpreplay says that it was compiled using libpcap .5 (the default=20
> included
> > with obsd 3.3)
> >
> > The configure command does recognize a the path I gave it.  The version=
=20
> of
> > libpcap in /usr/lib is the correct version because I used the same=20
> location
> > to compile tcpdump 3.7.2 and it correctly found libpcap .7.2 in the same
> > location.
> >
> > Is there any reason why tcpreplay even needs the latest pcap libraries?
> >
> > Matt
> << attach3 >>
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--=20
Aaron Turner <aturner at pobox.com|synfin.net>  http://synfin.net/aturner
They that can give up essential liberty to obtain a little temporary=20
safety deserve neither liberty nor safety. -- Benjamin Franklin
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