DHCP unknown options

[Fabio Spelta <fabio_(_dot_)_spelta_(_at_)_tiscali_(_dot_)_it>]

Ok, here is another topic :)

When my dhcclient starts, it gets all the info it needs, plus some that it 
seems it cannot handle:

dhclient: unknown dhcp option value 0x80
dhclient: unknown dhcp option value 0xa0
[...]
dhclient: unknown dhcp option value 0xab

There are nine messages.
Once the DHCP connection stops and the system is "up and running", it receive 
about every 15 minutes the same sequence of warnings.

What they are and mean? If they are in some way inignificant, can I prevent 
them from appearing on my console and pehraps in the logs -if it can be 
wise-, too?

Thanks
-- 
  Fabio Spelta
  
   email:  spelta_(_at_)_linux_(_dot_)_it
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