Hey guys. Yes our wifi is stable and we have half a dozen various android version online and working fine until yesterday. No idea why it started changing IPs often. Any of our phones do it when we are connected using b4a bridge. Of the dozen + PCs and linux boxes, 2 Xboxes, 3 tvs and half a dozen phones, nothing else does that. That's why I tried static IPs and that was when it went to crap. The good news is I switched cables last night late and now I can use USB debugging. I will read through the article you listed above. The bridge is convenient when I need to shove something to my kids phones. I'll see if that gets it working.
Oh, and only one ide at a time, multiple reinstalls, deleted apks, etc.
No firewall blocking. I checked by turning it off.
It started like a light switch when I went to static IPS and it has persisted even after I switched back to DHCP.
I'll read the article.