Using Oracle stock Virtualbox current production on SL 7.1 .  Guest is 
MS Win 7 Pro.  When the physical LAN on a SL  7 host is a wired 802.3 
connection using a static IP (not DHCP), the standard Virtualbox NAT 
works.  However, when the physical
SL 7 LAN is a wireless 802.11 connection using DHCP and controlled by 
Network Manager, the SL 7 host works, but the MS Windows guest claims 
there is no network with what appears to be the same Virtualbox NAT 
configuration.  Has anyone else
experienced this issue?  This used to work on IA-32 SL 6, but has not 
been working on X86-64 SL 7.  In all cases, the
MS Win 7 guest is configured for IA-32.