Very weird network issues in my local network and/or internet connection

I'm experiencing weird behavior in my local network and/or internet connection. It seems that some requests fail for unknown reasons. I'm experiencing this with different devices in my network, but the issues are gone if I connect to another network. The symptoms are the following: GraphQl requests are failing sometimes to certain servers , e.g. curl 'https://graphql.datocms.com/' \ -H 'Authorization: 12345' \ -H 'Content-Type: application/json' \ -H 'Accept: application/json' \ --data-binary '{ query : query { allPosts { title } } }' curl: (35) Recv failure: Connection reset by peer If I try

Question by Giraphi on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.