Aleksander Morgado <aleksande...@chromium.org> writes: > Hey all, > > I wrote a doc explaining how IPv4/IPv6 connectivity in LTE networks is > setup (a very basic case scenario), including different possible > interactions between host, modem and network, and focusing on how all > these are exposed by ModemManager. > > It has been very useful for me to understand different IPv6 SLAAC > scenarios that we have seen with different modem types, so I'm sure it > will also be useful for others. Please take a look and report errors > if any! > > https://modemmanager.org/docs/modemmanager/ip-connectivity-setup-in-lte-modems/
That's a very nice writeup! Thanks. Don't know how I missed it before. I never knew of the extremely interesting IPv6 differences between Qualcomm and "Intel" modems. Guess I've been a littly too focused on Qualcomm modems every sicne the big EM7345 disappointment. Made me wonder if I would have had more success with an "Intel" modem for my DHCPv6-PD experiments. IIUC, they tunnel link-local directly from the host to the network? Or is that only for RAs or specific link local addresses? FWIW, I never figured out how to do DHCPv6-PD with the Qualcomm modems I used for testing. There's probably some magic trick. I can obviously work around the problem by using a non-link-local address for the DHCPv6 server. But being able to directly address a link-local address on the network side from the host would have made it so much easier, and direcly comparable to a FTTH or xDSL configuration. I guess I should dig out my old EM7345 and see how that works. Although it is pretty much irrelevant as I need to make this fly with Qualcomm modems too. Bjørn