Hi all,
I've noticed, painfully, that recent minor releases of tcpdump have changed the longstanding format for "tcpdump -v" text output. This isn't an inherently bad idea, but there are a lot of scripts in the world that parse tcpdump text output, and that are broken by arbitrary format changes. (For example, I have regression tests that check for particular packet characteristics; comparing to tcpdump text output can be better than pcap files for this purpose.)
I hope that the tcpdump-workers plan to re-stabilize the tcpdump text format soon, and that the next release will change a major version number, to make the format changes more obvious to users.
Thanks very much, Eddie Kohler
P.S. There's a bug in the ip_finddst function that causes most IP packets with options to report incorrect TCP/UDP checksums. A bug report and patch have been submitted to sourceforge.
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