如何使用固定的DNS服务器获取主机名的IP？

Question

Is there an easy way, on *nix platforms(Linux specifically) to get the IP address of a hostname, while supplying a custom DNS server to use in place of the system's configured one? I want to access this information from a C program.

Answer 1

You will need to use your own resolver, directly sending DNS packets, instead of relying on the system's resolver and gethostbyname . You would probably want to use a library, such as adns .

Answer 2

nslookup <hostname> <dns server>

例如：

nslookup www.example.com ns1.example.com