lkml.org 
[lkml]   [1999]   [Oct]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: receiving broadcasts from host zero in a subnet?
On Wed, Oct 20, 1999 at 04:53:55AM +0200, Andi Kleen wrote:
> jum@ra.han.de (Jens-Uwe Mager) writes:
>
> > I am attempting port a program to linux that listens to broadcast UDP
> > packets from a particular device while performing a network boot. This
> > UDP broadcast is received OK if it is from the all zeroes 0.0.0.0 address
> > to the all ones broadcast address. But if the packet is from for example
> > 192.168.1.0 to 192.168.1.255 (with subnet mask 255.255.255.0) the packet
> > does not appear to be received on an UDP socket bound to INADDR_ANY. The
> > device in questions its subnet but not its IP address so it uses this
> > peculiar broadcast. Is there any special rule I need to enable to receive
> > these kind of broadcasts?
>
> SO_BROADCAST, as documented in socket(7).

This option is already turned on, otherwise I would not have been able
to send broadcast packets.

--
Jens-Uwe Mager <pgp-mailto:62CFDB25>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:54    [W:0.501 / U:0.772 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site