Nginx with Varnish as a proxy. Phantom Port 80

[plutocrat]

So, just to be clear, these are the ones running now without varnish. Of
course the lines with listen 80 are changed to listen 8080, and when I
restart nginx, it appears on ports 80, 8080 and 443.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,265791,265796#msg-265796