Domain name system query method and communication apparatus

A communication apparatus, comprising

• a memory configured to store instructions;
• and
• at least one processor coupled to the memory and configured to execute the instructions to:
• receive a domain name system query request from a terminal apparatus, wherein the domain name system query request comprises a first domain name, and wherein the domain name system query request requests an Internet Protocol (IP) address corresponding to the first domain name;
• send first request information to a domain name system server, wherein the first request information comprises location information of the terminal apparatus and the first domain name;
• receive first response information from the domain name system server, wherein the first response information comprises the IP address;
• send first notification information to a session management network element,
• wherein the first notification information comprises at least one of the IP address or the first domain name, and
• wherein the first notification information is for selection of a first traffic steering node and a first protocol data unit session anchor for the terminal apparatus;
• and
• send the IP address to the terminal apparatus.

A communication apparatus, comprising:

• a memory configured to store instructions;
• and
• at least one processor coupled to the memory and configured to execute the instructions to
• receive first notification information from a first network element, wherein the first notification information comprises at least one of a first domain name or an Internet Protocol (IP) address corresponding to the first domain name;
• and
• select, based on the first notification information, a first traffic steering node and a first protocol data unit session anchor.