this is far, far harder to do compared to DNS flag days. changing the value to something else is futile. What needs to happen is people should allow ICMP into

this is far, far harder to do compared to DNS flag days. changing the value to something else is futile. What needs to happen is people should allow ICMP into their networks and allow PMTUD to work correctly. Path MTU discovery has solved this issue, but people keep dropping ALL icmp traffic.