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Which of the following is not a new addition to IS-IS to support IPv6 routing processing and calculation?

Which of the following is not a new addition to IS-IS to support IPv6 routing processing and calculation?
A . TLV 236: describes the reachability of the network by defining routing information prefix, metric value and other information
B . TLV 232: It is equivalent to the "IP Interface Address" TLV in IPv4, except that the original 32-bit IPv4 address is changed to a 128-bit IPv6 address
C . When an IPv6 route is advertised externally, the NLPID value must be included
D . The source IP address of the IS-IS Hello message is changed to the link-local address

Answer: D

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