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From: "Matthew N. Dodd" <mdodd@FreeBSD.org>
Date: Mon, 24 Mar 2003 15:48:36 -0800 (PST)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
Subject: cvs commit: src/sbin/ping ping.c
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mdodd       2003/03/24 15:48:36 PST

  FreeBSD src repository

  Modified files:
    sbin/ping            ping.c 
  Log:
  - Make -M mask and -M time exclusive.
  - Correct some problems with packet construction.
  
    +--------+------------+----------+-------------+---------+
    |        |            |          |             |         |
    | IP Hdr | MINICMPLEN | phdr_len | TIMEVAL_LEN | payload |
    |        |            |          |             |         |
    +--------+------------+----------+-------------+---------+
    |        |                       |                       |
    |<- IP ->|<------- ICMP -------->|<------ datalen ------>|
  
  My previous changes tried to mess around with 'datalen' instead of
  modifying 'phdr_len'.
  
  I'm including this nice ASCII diagram (from Maxim) to further clarify things
  in CVS history.
  
  Submitted by:    Maxim Konovalov <maxim@macomnet.ru>
  
  Revision  Changes    Path
  1.90      +21 -22    src/sbin/ping/ping.c

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