… layer. In contrast to PMTUD, Packetization Layer Path MTU Discovery (PLPMTUD) [RFC4821] introduces a method that does not rely upon reception and validation of PTB messages. It is therefore more robust than Classical PMTUD. This has become the recommended approach for implementi…

…(PMTUD) [ RFC1191 ][RFC8201], packetization layer path MTU discovery (PLMTUD) [ RFC4821 ], as well as mechanisms inside transport protocols [ RFC793 ][RFC4340][ RFC4960 ]. The following subsections summarize the interactions between tunnels and MTU issues, including minimum tunne…

…an MTU estimate. An implementation of "Packetization Layer Path MTU Discovery" [RFC4821] either in SCTP or DTLS is RECOMMENDED. The path MTU discovery is performed by SCTP when SCTP over DTLS is used for data channels (see Section 5 of [DATA-CHAN]). 5. DTLS Considerations The DTL…

…n MTU estimate. An implementation of "Packetization Layer Path MTU Discovery" [ RFC4821 ] either in SCTP or DTLS is RECOMMENDED. The path MTU discovery is performed by SCTP when SCTP over DTLS is used for data channels (see Section 5 of [ DATA-CHAN ]). 5 . DTLS Considerations The…

…n MTU estimate. An implementation of "Packetization Layer Path MTU Discovery" [ RFC4821 ] either in SCTP or DTLS is RECOMMENDED. The path MTU discovery is performed by SCTP when SCTP over DTLS is used for data channels (see Section 5 of [ DATA-CHAN ]). 5 . DTLS Considerations The…

…require ICMP messages. The Packetized Path MTU Discovery algorithm defined in [ RFC4821 ] is one such algorithm, and a set of algorithms is defined in [ MTU-DATAGRAM ] . ¶ [ MTU-STUN ] is an implementation of [ RFC4821 ] that uses STUN to discover the path MTU; so it might be a s…

…require ICMP messages. The Packetized Path MTU Discovery algorithm defined in [ RFC4821 ] is one such algorithm. The details of how to use the algorithm of [ RFC4821 ] with TURN are still under investigation. However, as a step towards this goal, this version of TURN supports a D…

…. An extension to Path MTU Discovery defined in this document can be found in [ RFC4821 ]. RFC 4821 defines a method for Packetization Layer Path MTU Discovery (PLPMTUD) designed for use over paths where delivery of ICMPv6 messages to a host is not assured. Note: This document is…

…6 is followed; otherwise, they SHOULD feed into a path MTU discovery algorithm [RFC4821]. Source Quench and Time Exceeded ICMP messages SHOULD be ignored. Host, network, port, or protocol unreachable errors or parameter problem errors MAY, after appropriate vetting, be used to in…

…DP header. When performing path MTU discovery as described in [ RFC4820 ] and [ RFC4821 ] it MUST be taken into account that one cannot rely on the feedback provided by ICMP or ICMPv6 due to the limitation laid out in Section 4.5 . 4.7 . Handling of Embedded IP-addresses When usi…

…h upper layer protocols performing PMTU discovery, whether via [ RFC1191 ] or [ RFC4821 ] mechanisms. In particular: - Where allowed by the underlying transport protocol, the upper layer protocol SHOULD be allowed to set the state of the DF bit (in IPv4) or prohibit local fragmen…

…ch can only be overcome with Packetization Layer Path MTU Discovery (PLPMTUD) [ RFC4821 ]. 8 . Security Considerations The use of stateless IP/ICMP translators does not introduce any new security issues beyond the security issues that are already present in the IPv4 and IPv6 prot…

…ch can only be overcome with Packetization Layer Path MTU Discovery (PLPMTUD) [ RFC4821 ]. 8 . Security Considerations The use of stateless IP/ICMP translators does not introduce any new security issues beyond the security issues that are already present in the IPv4 and IPv6 prot…

…h upper layer protocols performing PMTU discovery, whether via [ RFC1191 ] or [ RFC4821 mechanisms. In particular: - Where allowed by the underlying transport protocol, the upper layer protocol SHOULD be allowed to set the state of the DF bit (in IPv4) or prohibit local fragmenta…

…e with upper layer protocols performing PMTU discovery, whether via RFC1191 and RFC4821 for IPv4 or via RFC8201 for IPv6. In particular: Where allowed by the underlying transport protocol, the upper layer protocol SHOULD be allowed to set the state of the Don't Fragment (DF) bit …