IPv6 Tunneling Flowchart 2

Yes

No

No

Yes

Send direct to IPv6 router

with IP destination

set to final destination

in IPv6 format

No

Send IPv6 datagram encapsulated in

IPv4 packet. IPv6 destination address

and IPv4 destination address is the

configured IPv4 address of the

tunnel endpoint.

Yes

End node

address is

IPv6-only

address

Destination

local?

IPv6 router

available?

Send direct with

destination address

set to IPv6 fromat

Configured tunnel

and IPv4 router

available?

Destination

unreachable

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