2026
CLM-RFC-8200-003013= 1280EXACT VALUEThe cited RFC normatively defines this value under the recorded constraints; it is a standards-defined exact value, not an empirical network measurement.Source: RFC 8200 — IPv6 minimum link MTU ↗
PROVENIPv6 minimum link MTU is 1280 bytes under RFC 8200 IPv6 links. Links unable to convey it in one piece must provide lower-layer fragmentation and reassembly.
The question, scope, and sources behind this Registry record.
Under RFC 8200 IPv6 links, what exact standards-defined value applies to link MTU?
Current frontiers derived from accepted Claims.
The accepted equality closes this optimization result.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.