server seek internet

hello

i'm working with aix 5.3 hacmp 5.4 P550 and P520
those two serevr every 10 seconds seek connection to the internet web.
i check with sniffer software and i've got this details.
the problem is that when i've problem with the internet those server get frizzzzzzz. on those servers running application INGRES DB.

first why?
second how to stop it?

best regards

ariec