The logs are showing the Hub dropping connection and restarting. The Upstream is also running hot.
You will need to contact VM for resolution, either by waiting here about a week until a VM Forum Team Member picks up the thread, or give them a call on 150 from a VM line or 0345 454 1111 for a quicker response.
Welcome to our forums and thank you for your post. I'm sorry that you've been having intermittent broadband issues.
In taking a look at the backend of your services, it appears that there has been a network fault in your area which would account for these symptoms. Everything looks within spec again now, how's everything been since your post?