Computer: Linux (Kubuntu 18.4).
Board: Robotdyn D1-R2
Arduino IDE 1.8.15
Using OTA on a esp8266 board fails after twenty or thirty dots and gives an "ERROR: Uploading."
I am aware that two different esp8266 packages exist, one from github and one from the board manager. I tried both in new Arduino IDE installs, uninstalling and deleting the other one before I installed the one in a completely clean Arduino installation with no other libraries installed. So it probably is not a bug in the esp8266 libraries. I use the BasicOTA sketch from the Examples 'as is'.
My computer has no firewall installed.
I have three APs in my house. They happily serve a lot of hosts, including some ESP8266's with websites on them. There are no performance problems with those websites. However, the OTA only starts when I use the nearest AP (three metres from the place where I try to perform the OTA) and as I said, the update peters out after forty or fifty dots. The APs further away do not even start.
The PC has a normal wired connection.
I have been wrestling with this problem for three years now, and this time I want to get to the core of it.