IS-IS is configured to support both IPv4 and IPv6 routing. Which statement is true?
A.
Separate IPv4 and IPv6 hellos will be sent.
B.
IPv6 will have a separate link-state database.
C.
IS-IS v6 support must be enabled under protocols isis.
D.
IS-IS sends IPv6 topology information as new TLVs in existing LSPs.