On Sat, Apr 07, 2001 at 01:36:55AM +0200, Torsten Landschoff wrote:
> On Fri, Apr 06, 2001 at 11:13:31AM +0100, Tomasz Szewczyk wrote:
> > I use Linux (kernel 2.4.2 with ATM support)
> > I try to make tcpdump -i atm0 but there is a problem
> > tcpdump: unknown physical layer type 0x13
0x13 is 19, which is ARPHRD_ATM, and...
> > Someone knows how to use tcpdump with ATM adapter?
>
> What version of tcpdump are you using? The current release (3.6.2)
> should work fine with ATM.
...there's definitely code in libpcap 0.6.2 and tcpdump 3.6.2 to handle
ARPHRD_ATM and the DLT_ATM_CLIP DLT_ type to which libpcap maps
ARPHRD_ATM, so, yes, it should work with ATM.
tcpdump 3.6[.x] also prints the data link type in the "unknown data link
type" in decimal, not in hex, so he's probably using a pre-3.6 version,
which doesn't have ATM support.
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