I kept getting an error through discord of "no route" this is obviously a network error, after some hunting around, I founf that the reason was because my ping assist was on 0, as I was playing on USA servers from the UK this is how the advice was to set it.
Having not used discord whilst playing on USA servers I did not realise this issue so when this error appeared once I went back to UK servers and started playing with friends again, not being able to connect through discord I was confused.
One of my friends lives in Egypt, it was him I noticed the 'no route' error, as I said previously, after some messing about I changed my ping, I put it to 30 and immedietly discord started working again, anything below this and it wouldnt work.
I can only assume this is a bug or there is some kind of clash between discord and the netduma.
This post was advisement for the potentuial need for a fix.
Regards