Re: [lwip-users] IPv6 porting, need help in netif->mld_mac_filter

[Zach Smith]

In my IP6 implementation I did not do anything with the mld_mac_filter parameter. It is just set to null in netif_add. FF02::1 is the all nodes multicast group so I think by default you are already joined to that group.

 

The only thing I can think of that you haven’t mentioned is to make sure your MAC is set up to accept multicast packets. It may be set to receive broadcast already but IP6 won’t work if it is not set to receive multicast.

 

-Zach

 

From: lwip-users-bounces+address@hidden [mailto:lwip-users-bounces+address@hidden On Behalf Of address@hidden
Sent: Thursday, January 09, 2014 10:05 PM
To: address@hidden
Subject: [lwip-users] IPv6 porting, need help in netif->mld_mac_filter

 

Hi,

 

I am new to LWIP IPv6 implementation.

I am trying to port it for my device, I have set below netif param and #define to respective values

 

#define LWIP_IPV6                             1

#define LWIP_IPV6_DHCP6             1

#define LWIP_ICMP6                          1

#define LWIP_IPV6_AUTOCONFIG              1

#define LWIP_IPV6_NUM_ADDRESSES     6

 

netif->ip6_autoconfig_enabled = 1;

netif->output_ip6 = ethip6_output;

 

With this setting I could see LWIP is sending

a>     “Multicast Listner Report”

b>    Neighbour solicitation

c>     Router Solicitation (to ff02::2)

 

Also I can see my router is sending me Router advertisement (to ff02::1) which I am not able to receive. I feel this is because I haven’t set below parameter in netif

netif->mld_mac_filter = ?????;

 

I am not sure what this function should be, As I know I have to join this multicast group to receive the advertisement packet.

 

Can someone help me in what this function should point to and is some example already  available?

 

Thanks and  Regards,

Manoj

 

The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments.

WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email.

www.wipro.com

---

This email may contain information that is confidential and/or legally privileged in nature. The message is intended for the use of the individual(s) or entity listed above. If you are not the intended recipient, please do not read, copy, publish or distribute the communication; and notify the sender by replying to this message and deleting this copy and any copies that may be in your electronic system. Thank you for your compliance.