How IPs are populated in local listener of an Exadata RAC DB?

Hello,

I'd like to understand how IPs are populated in local listener of an RAC database (in this case an Exadata RAC database).

The IPs configured in one server of the cluster are:

host IP = management IP : 10.19.195.44 (eth0)

vip: 10.19.227.33 = ex0203-vip  (bondeth10gb:2)

public IP: 10.19.227.31 (bondeth10gb)

When I check endpoints_listener.ora, I see:

LISTENER_EX02DB03=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=ex0203-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=10.19.195.44)(PORT=1521)(IP=FIRST))))             # line added by Agent

executing lsnrctl status, I receive:

Listening Endpoints Summary...

  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.19.195.44)(PORT=1521)))

  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=10.19.227.33)(PORT=1521)))