Does availability group listener runs on both SQL Server nodes or does it run on a separate machine

Lets say I am setting up AlwaysOn Availability Groups and following are the nodes: Primary 192.168.1.10 Secondary 192.168.1.11 I try to create a DNS entry for availability group listener called AvailabilityListener to which client applications will connect. My question is, which IP address shall I define for this listener? Will it be primary IP or secondary IP or some other machine IP where this listener will be running?