Would a VirtBox upgrade change anexisting networking config?

[RFrenette]

Recently I've been unable to load web pages, hosted on my Ubuntu Guest in Apache, from my OSX Host. In fact, I can no longer even ping the Guest OS from the Host.

In the past, when I did ifconfig on the Guest, I got an IP of 10.0.1.n. Now I'm getting 10.0.2.15--the default NAT Address. The thing is, I didn't change any settings recently. What I did do is run software update for OSX, Ubuntu, and updated VirtBox.

Current Versions:
VirtBox 4.0.8 r71778
Host: OSX 10.6.7
Guest: Ubuntu 11.04

Doe anyone have any idea why I can no longer access my Guest OS from my Host? I spent hours on this last night, to no avail. I guess another question would be: What would cause the Guest IP to change from 10.0.1.n to 10.0.2.15? As I say, I manually made no config changes.

Thanks much for any guidance!

Rob

[RFrenette]

??The solution turned out to be rather simple: Change the Network Adapter to Bridged.

Apparently the VirtBox upgrade reset my existing network setting to NAT.