Merge pull request #162 from forumbyr/master

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Merge pull request #163 from forumbyr/master

fix bug:ipredirection query
name server add ip query
Merge pull request #1 from cnnic/master

m
name server modify ip query
fix name server ip query 500 error
add test
modify nameServers search
Merge pull request #164 from larrychen8276/master

modify nameServers search
Merge pull request #18 from cnnic/master

merge from cnnic