fix bug-arpa domain query
Merge commit '2bf6113ced9151896f3537e887a176a223c0e7d9' into meok
Merge pull request #169 from warmdawn/dev

fix bug-arpa domain query
fix bug
Merge pull request #170 from warmdawn/dev

fix bug
merge Network to IP
Merge pull request #171 from warmdawn/dev

merge Network to IP
entity search
fix merge bug;
entity search.