What is the minimum supported MTU for IPv6?

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Multiple Choice

What is the minimum supported MTU for IPv6?

Explanation:
IPv6 requires that every link can carry a packet of at least 1280 bytes. This baseline ensures a path can deliver IPv6 packets without relying on router fragmentation. Since the IPv6 header is 40 bytes, a 1280-byte MTU leaves room for 1240 bytes of payload, which is sufficient for typical traffic while still guaranteeing reachability across diverse networks. Even though many links use 1500-byte MTUs, that’s not the minimum mandated by the standard; 1280 bytes is the required minimum. The other values don’t meet this network-wide baseline.

IPv6 requires that every link can carry a packet of at least 1280 bytes. This baseline ensures a path can deliver IPv6 packets without relying on router fragmentation. Since the IPv6 header is 40 bytes, a 1280-byte MTU leaves room for 1240 bytes of payload, which is sufficient for typical traffic while still guaranteeing reachability across diverse networks. Even though many links use 1500-byte MTUs, that’s not the minimum mandated by the standard; 1280 bytes is the required minimum. The other values don’t meet this network-wide baseline.

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