The output of the IPv6 Route Table differs in column headings and format because the IPv6 addresses are 128 bits versus only 32 bits for IPv4 addresses.The IPv6 Route Table section displays four columns:
• The Ifcolumn lists the interface numbers of the IPv6-enabled network interfaces from the Interface List section of the netstat –rcommand.
• The Metric column lists the cost of each route to a destination. The lower cost is the preferred route, and the metric is used to select between multiple routes with the same prefix.
• The Network Destination column lists the address prefix for the route.
• The Gateway lists the next-hop IPv6 address to reach the destination. On-link is listed as the next-hop address if it is directly connected to the host.
In this example, the figure displays the IPv6 Route Table section generated by thenetstat –rcommand to reveal the following network destinations:
• ::/0: This is the IPv6 equivalent of the local default route. The Gateway column provides the link-local address of the default router.
• ::1/128: This is equivalent to the IPv4 loopback address and provides services to the local host.
• 2001::/32: This is the global unicast network prefix.
• 2001:0:9d38:6ab8:1863:3bca:3f57:fef4/128: This is the global unicast IPv6 address of the local computer.
• fe80::/64: This is the local link network route address and represents all computers on the local-link IPv6 network.
• fe80::1863:3bca:3f57:fef4/128: This is the link-local IPv6 address of the local computer.
• ff00::/8: These are special reserved multicast class D addresses equivalent to the IPv4 224.x.x.x addresses.
The host routing table for IPv6 has similar information as the IPv4 routing table. What is the local default route for IPv4 and what is it for IPv6?
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What is the loopback address and subnet mask for IPv4? What is the loopback IP address for IPv6?
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How many IPv6 addresses have been assigned to this PC?
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How many broadcast addresses does the IPv6 routing table contain?
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Reflection