13、if you configure a router interface both ipv4 and ipv6 on an IS-IS network in single-topology mode, what additional configurations required?
IPV4 AND IPV6 ADDRESSES MUST BE CONFIGURED WITH THE SAME PREFIX LENGTH.
IPV4 AND IPV6 MUST BE CONFIGURED ON DIFFERENT ROUTING PROTOCOLS.
IPV4 AND IPV6 MUST BE CONFIGURED WITH DIFFERENT METRIC TYPES.
IPV4 AND IPV6 MUST BE CONFIGURED TO NM THE SAME IS-IS LEVEL.
