Date: Sun, 13 Apr 2008 11:06:10 -0400 From: tmm <tmm@fastmail.fm> To: Boris Kochergin <spawk@acm.poly.edu> Cc: freebsd-net@freebsd.org Subject: Re: Howto send a limited broadcast? Message-ID: <48022162.4030601@fastmail.fm> In-Reply-To: <4801A0F8.1060002@acm.poly.edu> References: <4800E2D5.20107@fastmail.fm> <480147C7.6090107@FreeBSD.org> <48017958.8020302@fastmail.fm> <4801A0F8.1060002@acm.poly.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
Boris Kochergin wrote: > tmm wrote: >> >> >> Bruce M. Simpson wrote: >>> tmm wrote: >>>> So, can anyone suggest how I can send a limited broadcast (on an >>>> interface that has been initalized with an IP and a subnet)? >>> >>> Use the IP_ONESBCAST option and send to the network broadcast >>> address for that subnet. The stack will change it into >>> 255.255.255.255 on output. See man page ip(4) for details. >>> >>> It's a hack, but it's largely due to how the stack has worked >>> historically. >>> >>> BMS >> Thanks. I wasn't aware of that option. >> >> But now I find that this option is not present in my (eCos port of) >> FreeBSD stack. Either it was removed during the port, or the ported >> version is too old. >> >> Perhaps the best thing for me to do is to look at the 'normal' >> FreeBSD stack (as opposed to the eCos one) and see how IP_ONESBCAST >> is implemented. Then perhaps I could do the same thing in my FreeBSD >> stack. >> >> Is there a way for me to download the FreeBSD source code without >> actually downloading, burning, and installing FreeBSD? Looking >> around the FreeBSD website I don't see a source download link. >> >> thanks, >> Tom. >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > You can get them via CVS: > http://www.freebsd.org/doc/en/books/handbook/cvsup.html. > > Also, although it, too, may be considered hacky, if the system you're > working on has pcap(3), you could just manually craft the broadcast > frame and send it out the interface yourself. I can provide some > sample code. > > -Boris Yes, that is what I was looking for - I'll use cvsup/csup to get the sources. I don't have pcap, but I do have access to the lower layers of the stack, so yes, I would be interested in seeing your code. Doing something like that might turn out to be a better solution for me. Thanks a lot. Tom.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?48022162.4030601>