Make Sure! RAC VIP configure, right?

when i implemented Oracle RAC and i used Virtual IP for connecting "but network ;) told me... find packets on both Virtual IP and Public IP"

Example:

service1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac01-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = rac02-vip)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = service1)
)
)

why? I connected by virtual IPs;)

while connection from client; so i tested "tcpdump" on client and rac01/rac02 servers, and i found traffics/packets on Public IP and Virtual IP.

As "tcpdump" told me client connected by Virtual IP... But used Public IP to work.

client -> rac01-vip:1521
.
.
client -> rac01:1521.
.
.

What wrong?
So, checked on oracle rac "lsnrctl services":

$ lsnrctl services
.
.
.
Service "service1" has 2 instance(s).
Instance "db1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:2 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=rac01)(PORT=1521))
Instance "db2", status READY, has 2 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=rac02)(PORT=1521))
"DEDICATED" established:8316 refused:0 state:ready
LOCAL SERVER

A mistake configuration about rac vip???
after I read "Oracle RAC — VIP Configuration Mistakes: by Alex Gorbache, i changed configuration:

-> listener.ora

rac01:
LISTENER_rac01 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac01-vip)(PORT = 1521)(IP = FIRST)))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac01)(PORT = 1521)(IP = FIRST)))
)
)

rac02:
LISTENER_rac02 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac02-vip)(PORT = 1521)(IP = FIRST)))
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac02)(PORT = 1521)(IP = FIRST)))
)
)

-> tnsnames.ora on both nodes

LISTENERS_DB =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac01-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = rac02-vip)(PORT = 1521))
)

LISTENERS_rac01 =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac01-vip)(PORT = 1521))
)

LISTENERS_rac02 =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = rac02-vip)(PORT = 1521))
)

-> DATABASE

rac01:
SQL> show parameter listener

NAME TYPE VALUE
-----------------------------------------------------------------
local_listener string LISTENERS_rac01
remote_listener string LISTENERS_DB

rac02:
SQL> show parameter listener

NAME TYPE VALUE
-----------------------------------------------------------------
local_listener string LISTENERS_rac02
remote_listener string LISTENERS_DB

(just example)

and then checked:

$ lsnrctl services
.
.
Service "service1" has 2 instance(s).
Instance "db1", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:2 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=rac01-vip)(PORT=1521))
Instance "db2", status READY, has 2 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0 state:ready
REMOTE SERVER
(ADDRESS=(PROTOCOL=TCP)(HOST=rac02-vip)(PORT=1521))
"DEDICATED" established:8316 refused:0 state:ready
LOCAL SERVER

after that, I tested connection from client by Virtual IPs again, and "tcpdump" dumped traffics/packets.

client -> rac01-vip:1521
.
.
client -> rac01-vip:1521.
.
.

I've not found traffics/packets on Public IP anymore.