GRE: IPv6 Packet Too Big

Exercise | inner 1498 B > GMTU 1476 B | no outer fragmentation

GRE: IPv6 Packet Too Big Exercise | inner 1498 B > GMTU 1476 B | no outer fragmentation DNS 1450 + UDP 8 + IPv6 40 = 1498 B Drop oversized packet; ICMPv6 PTB, MTU = 1476 After PMTU adaptation: each inner packet <= 1476 B Outer IPv4 20 + GRE 4 + inner <= 1500 B Inner IPv6 source · Sequence participant Inner IPv6 source GRE ingress · Sequence participant GRE ingress GRE egress · Sequence participant GRE egress Legend return default message