| 摘要 |
<p>A communication apparatus having first address which is link local address of IPv6 and is used for communicating with node apparatus and second address which is global address acquires an IPv6 address corresponding to node apparatus, determines whether IPv6 address acquired is link local address or global address, based on prefix included in IPv6 address acquired, generates address candidate of node apparatus by combining interface ID included in IPv6 address acquired with prefix of second address, when IPv6 address acquired is determined to be link local address, generates NI-query message of ICMPv6 including address candidate as destination address, transmits NI-query message, receives NI-reply message of ICMPv6, and determines that address candidate is global address of node apparatus when NI-reply message received includes address candidate as sender address.</p> |
