abstract:Path MTU Discovery (PMTUD) is a standardized technique in computer networking for determining the maximum transmission unit (MTU) size on the network path between two Internet Protocol (IP) hosts, usually with the goal of avoiding IP fragmentation. PMTUD was originally intended for routers in Internet Protocol Version 4 (IPv4),RFC 1191, Path MTU Discovery, J.
The HeartbeatExtensionprovidesanewprotocolforTLS/DTLSallowing the usage of keep-alive functionalitywithoutperforming a renegotiationand a basis for pathMTU (PMTU) discovery for DTLS.