## page was renamed from DNS/Deadwood/検索動作
DNS/Deadwood/検索動作について、ここに記述してください。

引用元:　http://maradns.samiam.org/deadwood/doc/Recursive-algorithm.html

[[/2]] How Deadwood stops blind spoofing attacks

[[/3]] Handling "incomplete" answersHandling "incomplete" answers

[[/4]] Linking names to IPs

== How Deadwood resolves a name ==
A simplified version of the method Deadwood uses to resolve a domain via recursion is as follows:

 1. Deadwood gets a request to resolve a given domain from a stub resolver
 2.  Deadwood requests a domain from a root server.
 3.   Deadwood gets an answer from that server.
 4.   Deadwood looks at the answer.
 5.   There are three types of answers Deadwood can get:
     1.   A complete answer that answers the DNS question.
     2.   An incomplete NS referral, which can either have glue or be glueless.
     3.   An incomplete CNAME referral 
 6.  If the answer is a complete answer, Deadwood sends the answer back to the stub resolver.
 7.  If the answer is an incomplete answer, Deadwood must send more queries to get a complete answer. 
        I will detail this process below. 

[[/3]] Handling "incomplete" answersHandling "incomplete" answers

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検索はつねに root server から始めるようだ。
　referral で返ってきた NS レコードは NS レコードとしてはキャッシュされない。