This is really common in ‘airgapped networks’ so much that tools exist to create tunnels. I tested this on a job and upstream dns servers blocked me after about

This is really common in ‘airgapped networks’ so much that tools exist to create tunnels. I tested this on a job and upstream dns servers blocked me after about 1mb of traffic, it’s an abuse of a public service and a complete waste of resources (5-10x amplification) so something that’s completely understandable. I imagine 10 years ago, controls may not have been so good though. Edit: part of the rationale in some cases, I believe, is to facilitate captive portals for hotel wifi login etc.