Re: about multicasting with IPv4


Jukka Rissanen
 

Hi,

it is not enough to just add an API for adding the multicast address to
the interface. In order to routers send multicast traffic to the
device, it needs to also join IPv4 multicast group.
For IPv6 there is MLDv2 (Multicast Listener Discovery) support that was
added recently, so something similar should be done for IPv4.

Cheers,
Jukka

On Tue, 2017-03-21 at 08:13 +0000, 황윤희 wrote:
Dear Jukka,
 
Thanks for kind response.
I have a quesiton.
Is it possible to support IPv4 if only we make the api to add
multicast address?
Is that the only thing to do for enabling multicasting with IPv4 ?
I'm not sure if it's meaningful job that I make that api.
If then, I think I can try to do it.
But if not, it's impossible to me.
That's why I ask you about it.
 
Thanks and regards,
Hwang, Yunhee (Eunice)  
IoT Lab ,Software R&D Center
SAMSUNG ELECTRONICS CO.,LTD

TEL: +82-2-6147-7654
Moblie: +82-10-3421-1574
E-mail: yunhee.hwang@samsung.com
 
 
 
 
 
--------- Original Message ---------
Sender : Jukka Rissanen <jukka.rissanen@linux.intel.com>
Date : 2017-03-16 23:54 (GMT+9)
Title : Re: [Zephyr-devel] about multicasting with IPv4
 
Hi,

IPv4 multicast support is not really there yet. We have space in
net_if
struct (see net_if.h) for storing the IPv4 multicast addresses but
currently there is no API to set and/or use them.

Feel free to send patches to fix this if you can.

Cheers,
Jukka


On Thu, 2017-03-16 at 13:13 +0000, 황윤희 wrote:
Hello all,
 
I have a question about IPV4 dev status.
I check some networking funtions with IPv4. 
It seems to me that Zephyr doesn't have the api to set IPv4
multicast
address .
Doesn't Zephyr support IPv4 multicasting?
If it does, could anybody let me know how to enable it?
 
Thanks and regards,
Hwang, Yunhee (Eunice)  
IoT Lab ,Software R&D Center
SAMSUNG ELECTRONICS CO.,LTD
 
TEL: +82-2-6147-7654
Moblie: +82-10-3421-1574
E-mail: yunhee.hwang@samsung.com
 
 
 
  
  
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