The
dns.resolve6() method is an inbuilt application programming interface of the dns module which is used to resolve IPv6 address ('AAAA' record) for the specified hostname using DNS protocol.
Syntax:
dns.resolve6( hostname, options, callback )
Parameters: This method accept three parameters as mentioned above and described below:
- hostname: This parameter specifies a string which denotes the hostname to be resolved.
- options: It is in the form of an object.
- ttl: It is a Boolean parameter specifies whether the Time-To-Live value (TTL) for each record to be retrieved or not. If set to true, TTL for each record is retrieved (in seconds).
- callback: It specifies a function to be called after DNS resolution of the hostname.
- error: It specifies error if generated.
- address: It is a string or object that signifies the returned IPv6 address for the hostname.
Return Value: This method returns IPv6 address through callback function. These data are passed as parameters to the callback function.
Below examples illustrate the use of dns.resolve6() method in Node.js:
Example 1:
Output:
address: ["fd00:0:14:13::22da:3e74"]
Example 2:
Output:
address: [{"address":"fd00:0:14:13::22da:3e74", "ttl":30}]
Note: The above program will compile and run by using the
node index.js command.
Reference: https://nodejs.org/api/dns.html#dns_dns_resolve6_hostname_options_callback
