A router receives an Ethernet frame that holds an IPv6 packet. The router then makes a decision to route the packet out a serial link. Which of the following statements is true about how a router forwards an IPv6 packet?

A router receives an Ethernet frame that holds an IPv6 packet. The router then makes a decision to route the packet out a serial link. Which of the following statements is true about how a router forwards an IPv6 packet?

• The router discards the Ethernet data-link header and trailer of the received frame.
• The router makes the forwarding decision based on the packet’s source IPv6 address.
• The router keeps the Ethernet header, encapsulating the entire frame inside a new IPv6 packet before sending it over the serial link.
• The router uses the IPv4 routing table when choosing where to forward the packet.

Explanation: Routers use the same process steps when routing IPv6 packets as they do when routing IPv4 packets. Routers route IPv6 packets based on the IPv6 addresses, listed inside the IPv6 header in the IPv6 packets, by comparing the destination IPv6 address to the router’s IPv6 routing table. As a result, the router discards the incoming frame’s data-link header and trailer, leaving an IPv6 packet. The router compares the destination (not source) IPv6 address in the header to the router’s IPv6 (not IPv4) routing table and then forwards the packet based on the matched route.