On Sat, 02 Oct 2010 13:53:32 -0400
Jim <binary...@comcast.net> wrote:

> What is the -n -n After eth0 mean ?

man tcpdump

-n     Don’t  convert  host  addresses  to names.  This can be used to
avoid DNS lookups.

-nn    Don’t convert protocol and port numbers etc. to names either.
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