We have a rack hosted with MTN business (old Verizon / uunet) in their new Gallo Manor data centre. It appears connectivity to our subnet becomes unstable from 1AM to 5AM every day. Initially we thought it was our application but we have set-up monitoring and the firewall itself becomes inaccessible. It appears that the hosts do respond to ping though, it is just TCP connections that are failing, through out the rest of the day we do not experience a second of downtime. Has anyone experienced similar issues?