"broadcast ping" message
jdp at polstra.com
Wed Apr 16 10:36:44 PDT 2003
In article <Pine.GSO.4.53.0304152157070.20388 at granville.cs.ubc.ca>,
Kan Cai <kcai at cs.ubc.ca> wrote:
> This is a really dumb question. When I say it doesn't work, I mean there
> is no output on the screen as you do point-to-point ping normally.
> Actually it works, it won't show anything just because there is no
> ack for broadcasting. Using tcpdump can easily notice this thing.
To make a FreeBSD system respond to broadcast pings, you have to set
the sysctl variable net.inet.icmp.bmcastecho to 1.
John D. Polstra & Co., Inc. Seattle, Washington USA
"Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa
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