[atlas]DHCP behaviour of the probe on startup

Hi folks,

while debugging some non-probe-related issues here at my ADSL'd net @home,
I was told by the provider's techie, that the probe tries to grab *two*
addresses at startup.

He was monitoring the ARP table in the router, saw a DHCP request and the
address assigned by the DHCP Server, and immediately asfterwards, the probe
sent a request for an additional address, which was granted by the server.

Trying to verify that, I later found out that I can ping the probe only on
the second address. [1]

Has anyone seen such a behaviour? Unfortunately, I don't have access to
the router (cisco 800 series) as it is fully managed by the ISP, and for
my other probe we had the IP-Address hard-wired into the DHCP server for
the MAC address.

Thanks,
Wilfried.

[1] this is particularly nasty for home networks with a very small number
    of addresses available (a bock of 8 in may case) and a long timeout...