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Next hop addresses computed by routing protocols are usually link-local addresses.
During the period of
transitioning
the Internet to IPv6, a global IPv6 Internet backbone may not be
available.
One transition mechanism is to tunnel IPv6 packets inside IPv4 to reach remote IPv6 islands. When a packet is
sent over such a link, it is encapsulated in IPv4 in order to traverse an IPv4 network and has the IPv4
headers removed at the other end of the tunnel.
7.6.3. Default IPv6 Routing Values
Table 15 shows the default values for the IP routing features this section describes.
Table 7-4: IPv6 Routing Defaults
Table 16 shows the default IPv6 interface values after a VLAN routing interface has been created.
Table 7-5: IPv6 Interface Defaults
7.6.4. Configuring IPv6 Routing Features
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