Hello,
I am running into some issue here determining the network prefix. I have an LTE modem ( QBG95-M3 ) that I am using to with LwiP PPPoS with IPv6. I have been able to successfully establish connection with the network and I see that the network
is sending the interface ID portion of the IPv6 upon successful PPP negotiation.
Here are the final addresses I am seeing LWIP printing:
local LL address fe80::EDDB:A3CC:28BF:9748
remote LL address fe80::9038:08DC:AEBE:C18E
LwIP is taking the interface ID received and prepending FE80 thereby creating the link-local address on the interface. My problem here is that I will like to see the full global unicast 128-bit (NETWORK PORTION + INTERFACE ID) address
on the interface also. Somehow, I can’t seem to find the network prefix. Do I have to send a router solicitation to get the prefix and build the full 128-bit global unicast address and add it to the interface?
If I do have to send a router solicitation, how do I go about doing so with Lwip? I did try calling nd6_tmr() but nothing seems to be happening. I cannot call nd6_send_rs() directly since it is not exposed. Any help will be highly appreciated.
I did the same PPP negotiation with this modem on a Raspberry Pi 4 running Ubuntu and got both addresses ( LL address and global unicast address) on the interface.
Best regards,
~Edman
Edman G. H Zayzay
Principal Embedded Software Engineer
Energy Automation Solutions (EAS)
