Messages in this thread | | | Date | Sun, 2 Mar 1997 20:33:20 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | traceroute |
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More info on the traceroute problem:
When the 2.1.27 kernel uses traceroute, it sends an unknown prototype 255. The highest known type is 18.
20:14:46.249961 chaos.analogic.com > world.std.com: ip-proto-255 40 (ttl 64, id 3871)
When the EXACT same source-code tcpdump is executed on another Linux machine running Linux version 2.0.16, the correct results occur. I am listening on a different Linux machine so I am recording the actual stuff on the wire.
20:15:11.383904 boneserver.analogic.com.40895 > world.std.com.33435: udp 12 [ttl 1] (id 40896)
The version of tcpdump is 3.0.4 and I have freshly compiled it without any errors on the 2.1.27 kernel (the problem) machine.
Observations: the id (gotten from the pid) is correct. Therefore I think the raw packet is being properly assembled, i.e., not a header problem.
Cheers, Dick Johnson -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Richard B. Johnson Project Engineer Analogic Corporation Voice : (508) 977-3000 ext. 3754 Fax : (508) 532-6097 Modem : (508) 977-6870 Ftp : ftp@boneserver.analogic.com Email : rjohnson@analogic.com, johnson@analogic.com Penguin : Linux version 2.1.27 on an i586 machine (66.15 BogoMips). Warning : It's hard to remain at the trailing edge of technology. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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