I have been working on this for the last week and I’ve tried a ton of different approaches and haven’t found anything that works consistently.

I’m using UNIX port, the TAP net interface and the BSD-alike Socket API that LwIP provides.
The getaddrinfo from lwip is returning error ERR_VAL (value -6 if I activate debugging mode), I think I’m initializing everything correctly, I already set up a HTTP server with no problem.