单选题How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）AIt will fragment the packet at Layer 2.BIt will fragment the packet at Layer 3.CIt will drop the packet and send an ICMPv6 message packet too big back to the source.DIt will drop the packet.
单选题
How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）
A
It will fragment the packet at Layer 2.
B
It will fragment the packet at Layer 3.
C
It will drop the packet and send an ICMPv6 message packet too big back to the source.
D
It will drop the packet.
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