[SunHELP] Loopback traffic

[Brigance, Leslie V, WCS]

Could someone (or several someones) help me in my ignorance here?

# netstat -i
Name  Mtu  Net/Dest      Address        Ipkts  Ierrs Opkts  Oerrs Collis
Queue
lo0   8232 loopback      localhost      38607141 0     38607141 0     0
0
eri0  1500 hostname      hostname       75117079 0     59010762 4     0
0
hme0  1500 hostname_bk   hostname_bk    27642560 0     33303514 0     0
0

What would cause so much traffic on the loopback port?
This machine was rebooted on Jan 21.
Machine name was obviously changed to hostname.

TIA