Adding the IP address after port worked; didn't find the cause yet.
server {
listen 3838 0.0.0.0;
(please note 0.0.0.0 as per andresrcs notes below)
Adding the IP address after port worked; didn't find the cause yet.
server {
listen 3838 0.0.0.0;
(please note 0.0.0.0 as per andresrcs notes below)