Hi,
While I'm uploading an image to an issue to github.com from my ubuntu 16.04 LTS computer (say computer A), it fails after some minutes and an error is reported : sometime a 400's and I see in the dev pane of firefox a "connection reset".
This computer A is directly connected to the ISP's box (which do the NAT job). Now, if I configure this same computer A to use my phone as a Internet gateway : it works !
I have another Windows computer B on the same network (connected to the same box), no issue either.
yet another laptop computer C with a 16.04 LTS connected to the same network : FAIL I tried to achieve the same upload with a ubuntu 18.04 LTS on computer A and it also fails.
So might it be a problem with Ubuntu, or a TCP issue somewhere ? I did capture the traffic with wireshark while uploading : see http://dl.free.fr/gY7kZ1b9B
Could it be something specific to Ubuntu ?
