Re: [lwip-users] Using IPV6 (lwIP git head)

[Ivan Delamer]

Good to know it is working for you. Multicast ping can be tricky and not
always supported.

Cheers
Ivan


> Date: Thu, 28 Jun 2012 10:27:28 +0000
> From: Yvan Labadie <address@hidden>
> To: Mailing list for lwIP users <address@hidden>
> Subject: Re: [lwip-users] Using IPV6 (lwIP git head)
> Message-ID:
>       <address@hidden>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Ok, I've founded !
>
> It was my ethernet MAC configuration, I had "ETH_Receive_All" disabled...
> oops!
>
> Yvan.
>
> De : address@hidden
> [mailto:address@hidden De la
> part de Yvan Labadie
> Envoy? : jeudi 28 juin 2012 12:11
> ? : address@hidden
> Objet : [lwip-users] Using IPV6 (lwIP git head)
>
> Hello,
>
> I'm using lwIP in FreeRTOS on a STM32F1xx processor.
>
> I was using lwIP v1.4.0, but now I want to use IPV6, so I migrated to git
> master head source code.
> This latest version of lwIP is working good with IPV4, but not with IPV6.
>
> I've added
> #define LWIP_IPV6                 1
> #define LWIP_IPV6_MLD             1
> #define LWIP_IPV6_DHCP6           1
> #define LWIP_ICMP6                1
> #define LWIP_IPV6_AUTOCONFIG      1
> in my lwipopts.h
>
> I'm calling "netif_create_ip6_linklocal_address(&ethIface,1)" after
> "netif_set_up(&ethIface)"
>
> Then I display all the IPV6 addresses (ethIface.ip6_addr[0 to max])
> I can see that first one is the link local, and its status goes from
> TENTATIVE to PREFERED.
>
> I ping this link-local address using ping6 on my computer but the device
> is not responding.
> (NB ping6 is working OK, I've tested it with another computer connected to
> the same network interface).
>
> I put a breakpoint in the ETHTYPE_IPV6 case, just after the
> low_level_input() inside ethernetif_input().
> But I never get the break (break on ETHTYPE_IP or ETHTYPE_ARP is working)
>
> With Wireshark I can see that the computer is sending the ICMPv6 requests,
> but the MAC destination is a type "IPv6mcast" whereas when I ping6 another
> computer in MAC destination field I got its MAC address...
>
> Did I miss something in the lwIP migration?
> Or is it a problem of setting up the interface?
>
> Thanks a lot for your great work,
>
> Best regards,
>
> Yvan.
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