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Shahar , <br>
Thanks ....<br>
<br>
see below :<br>
Shachar Shemesh wrote:
<blockquote cite="mid:4A784B04.4060303@shemesh.biz" type="cite">
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I'll just point out that my Multicast understanding is a bit tenuous.<br>
<br>
Lev Olshvang wrote:
<blockquote cite="mid:4A785714.304@vboxcomm.com" type="cite">Evening
all, <br>
<br>
<br>
But if I change the interface IP address to other network, these
packets are ignored at IP layer (data link layer got it since RX count
is running according to ifconfig ) <br>
I have tcp ip forwarding set to 1 and application sets multicast
socket option to join the multicast group. <br>
<br>
</blockquote>
Did you change the IP address after the socket is up? Multicast needs
to perform some handshaking before it can start sending data, and this
handshake might be done only at the "start".<br>
<br>
</blockquote>
<br>
Since this is my network driver , I reload it and set IP after
reload, as well I put some printk in it so I see data link accepts
packages in either case. tcpdump also shows these packets.<br>
<blockquote cite="mid:4A784B04.4060303@shemesh.biz" type="cite">Also, I
would start the debugging by running a sniffer and seeing
whether the packets actually leave the machine, and if so, with what
destination MAC address.<br>
<br>
</blockquote>
I have no problem with MAC ( driver gets the packets), I put also
some printk in net/ipv4/route.c and I see this packets are discarded at
IP layer.<br>
<blockquote cite="mid:4A784B04.4060303@shemesh.biz" type="cite">Shachar<br>
<pre class="moz-signature" cols="72">--
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.lingnu.com">http://www.lingnu.com</a>
</pre>
</blockquote>
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