[16692] in Athena Bugs

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sun4 8.2.15: traceroute

daemon@ATHENA.MIT.EDU (Nickolai Zeldovich)
Thu Feb 11 09:32:08 1999

To: bugs@MIT.EDU
Date: Thu, 11 Feb 1999 09:32:02 EST
From: Nickolai Zeldovich <kolya@MIT.EDU>

System name:		pepsi.mit.edu
Type and version:	SPARC/5 8.2.15
Display type:		cgsix

What were you trying to do?
	Attempting to use "traceroute -I" on Solaris.

What's wrong:
	For some reason there is no reply to the ICMP packets from the last
hop.. Whileas on NetBSD it works well:

pepsi% traceroute -I pca
[...]
 2  E40-RTR-FDDI.MIT.EDU (18.168.0.11)  1.608 ms  3.091 ms  3.505 ms
 3  * * *

lm% traceroute -I pca
[...]
 2  E40-RTR-FDDI.MIT.EDU (18.168.0.11)  2.331 ms  2.912 ms  2.277 ms
 3  PACIFIC-CARRIER-ANNEX.MIT.EDU (18.69.0.28)  2.122 ms  2.306 ms  1.957 ms

(lm is a NetBSD-Athena machine)

tcpdump shows for pepsi:

10:28:31.554425 18.239.2.240 > 18.69.0.28: icmp: echo request (DF)
10:28:31.555927 18.168.0.11 > 18.239.2.240: icmp: time exceeded in-transit
10:28:31.561857 18.239.2.240 > 18.69.0.28: icmp: echo request (DF)

and no reply to the third packet, whileas for lm:

10:28:59.770241 18.239.2.130 > 18.69.0.28: icmp: echo request
10:28:59.775452 18.168.0.11 > 18.239.2.130: icmp: time exceeded in-transit
10:28:59.779285 18.239.2.130 > 18.69.0.28: icmp: echo request
10:28:59.780135 18.69.0.28 > 18.239.2.130: icmp: echo reply

This doesn't appear to be PCA-specific either.

What should have happened:
	The traceroute should have completed and not timed out on the last
hop.

Please describe any relevant documentation references:
	traceroute(8), tcpdump(1)

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