lwIP v2 Support

[HarrisonMylesG]

Got a new computer and downloaded the latest ESP8266 core (3.2) not realizing v1.4 is deprecated since 3.0, caused me all sorts of problems. Would really appreciate support for lwIP v2.

[pvint]

I'm just about to have the same problem myself. Can't look at it tonight, but I already looked into it enough to know that it will be and issue (and likely other things).

I've been having trouble getting time for this lately, so forgive me if I forget about it for a bit. Feel free to bump this as needed. ;)

[mutcode]

+1 for this. With debug on I can see the probe being sent out by Alexa, and responses being sent back, but no devices are being discovered. Assuming v2 instead of v1.4 is the problem.