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Re: [lwip-users] lwip IPV6 PPP only get link local address and cannot co


From: Sylvain Rochet
Subject: Re: [lwip-users] lwip IPV6 PPP only get link local address and cannot connect to server
Date: Thu, 11 Nov 2021 14:26:19 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

Hi,

On Thu, Nov 11, 2021 at 10:40:09AM +1100, Jiang Peng wrote:
> Hi everyone,
> I have a project that is running LwIP V2.1.2. The stack is LwIP on top of
> BG96 cellular modem.
> It works fine for IPV4, but when I enable IPV6, I only get IPV6 link local
> address, and cannot get real IPV6 address, therefore, I cannot connect to
> my server.
> The LwIP comes from ST cellular expansion package.
> I enable the log, and it got local and remote LL address, but after that
> never got any real address, and cannot connect to my server.
> thanks a lot for any hints or suggestions.

This is normal. You need to run IPv6 NDP, DHCPv6 or static 
configuration, depending on what your peer is using, over the PPP link.

Sylvain

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