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I want to change my Default ip address to be 0.0.0.0. How do I go about that?
I'm sorry but what exactly are you talking about?
The issue is caused because my application is listening on 127.0.0.1:8080. After some research I found that my app should listen on 0.0.0.0:8080 instead.
Okay, what application?
Server Thin web server (v1.6.3 codename Protein Powder)
Maximum connections set to 1024
Listening on 127.0.0.1:8080, CTRL+C to stop
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Are you sure it's 0.0.0.0:8080 and not your droplet ipaddress:8080? If it's ipaddress:8080 you need to change your droplet's hostname.