From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <f3daa11047a643fa97d24bf1dd7001e9@quanstro.net>
From: erik quanstrom <quanstro@quanstro.net>
Date: Mon,  9 Mar 2009 09:24:21 -0400
To: 9fans@9fans.net
In-Reply-To: <0C884056-DAC1-484D-880A-30012762C49C@ar.aichi-u.ac.jp>
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Subject: Re: [9fans] ping suicide: sys: trap: divide error  pc=0x00003953c
Topicbox-Message-UUID: b682d712-ead4-11e9-9d60-3106f5b1d025

since it doesn't make sense to both send packets
as fast as possible and to delay randomly between
packets,  i think this case is just disallowed.

/n/sources/plan9//sys/src/cmd/ip/ping.c:532,537 - ping.c:532,541
  		break;
  	} ARGEND;

+ 	if(flood && rint){
+ 		fprint(2, "-f and -r are not compatable\n");
+ 		usage();
+ 	}
  	if(msglen < proto->iphdrsz + ICMP_HDRSIZE)
  		msglen = proto->iphdrsz + ICMP_HDRSIZE;
  	if(msglen < 64)

and

/n/sources/plan9//sys/man/8/ping:83,89 - ping:83,91
  adds the IP source and destination addresses to each report.
  .TP
  .B f
- send messages as fast as possible (flood).
+ send messages as fast as possible (flood). This flag
+ is not compatable with
+ .BR -r .
  .TP
  .B i
  sets the time between messages
/n/sources/plan9//sys/man/8/ping:104,110 - ping:106,114
  .TP
  .B r
  randomizes the delay with a minimum extra delay of 0 ms and a
- maximum extra delay of the selected interval.
+ maximum extra delay of the selected interval. This flag
+ is not compatable with
+ .BR -f .
  .TP
  .B s
  sets the length of the message to be