Ending the "silent drop": how Dynamic Path MTU Discovery makes the Cloudflare One Client more resilient

What this post added

This post introduces Dynamic Path MTU Discovery (PMTUD) to the Cloudflare One Client, enhancing its resilience against 'PMTUD Black Holes'. It details how the client actively probes network paths to determine optimal packet sizes, moving beyond reliance on potentially dropped ICMP messages. This ensures stable connections for users across various network conditions, particularly benefiting mission-critical applications like those used by first responders and hybrid workers.