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Re: [lwip-users] Sending UDP packets to

From: Simon Goldschmidt
Subject: Re: [lwip-users] Sending UDP packets to
Date: Mon, 10 Aug 2009 10:42:28 +0200

lwIP is very limited in routing. Currently, it can only send one packet on one 
interface. I guess the current 'routing' mechanism will return the default 
netif as target of a packet with broadcast address.


-------- Original-Nachricht --------
> Datum: Mon, 10 Aug 2009 12:55:33 +0530
> Von: Mandeep Sandhu <address@hidden>
> An: Mailing list for lwIP users <address@hidden>
> Betreff: [lwip-users] Sending UDP packets to

> Hi All,
> Can I send UDP packets to the IP broadcast address
> I'm  implementing
> a tiny DHCP server and all DHCP respone's need to go out to the
> broadcast IP addr.
> I'm currently using the BSD stack with ECOS, but having issues in
> sending the packet out
> as it gets dropped during a route lookup (i've tried with the
> MSG_DONTROUTE option too
> without success).
> How does lwIP handle sending of broadcast IP frames? I guess it should
> go out of all available
> interfaces if they are UP and have the relevant 'broadcast' flags set.
> Or do we have to add a broadcast specific route entry to make this happen?
> Thanks,
> _______________________________________________
> lwip-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/lwip-users

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