XP guest won't get an IP address from DHCP server

[Serge]

Hello.

Host: Ubuntu 9.10, Vbox 3.1.2 r56127 Guest: Windows XP SP3, bridged to wlan0 (wi-fi nic on hp dv2000 laptop)

Windows XP worked perfectly for a few months, then all of a sudden XP guest isn't able to receive an IP address from the Linksys router's dhcp server. Haven't changed anything, but 'maybe' Ubuntu update ran before it broke, not sure.

Tried switching different Vbox NIC controllers on XP guest. If i set static IP on the XP guest, I can ping LAN pcs and even surf the web for 5-10 seconds, but then Internet Connectivity stops. Can't ping public ips...

Thanks in advance!

[Walter Thomson]

Same issue here:

• host: FreeBSD 7.2 release
• VirtualBox: virtualbox-3.0.51.r22902_3 (compiled from FreeBSD ports) . bridged networking . <Adapter slot="0" enabled="true" MACAddress="005056280182" cable="true" speed="0"

type="Am79C973">

• client: Windows XP SP3

tcpdump reveals that DHCP queries are sent by the client, and DHCP replies appear on the wire; however, they do not seem to be seen by the client.

Tried other adapter types too, no change in behavior.

[Walter Thomson]

A follow-up on the issue with FreeBSD:

I got it to work by *not* loading the vboxdrv, vboxnetflt, and vboxnetadp kernel modules during boot time but manually later.

Maybe there is an interaction with the FreeBSD firewall which is also loaded, or some other problem with the interaction of FreeBSD's network stack with the pseudo-network device of VirtualBox.

[Serge]

Mine still doesn't work... I'm about to just reinstall Ubuntu and start over. Nobody really helps on this board?

[regeland]

I can confirm this bug also on Xubuntu 9.10 and VirtualBox 3.1.2. I also examined the traffic, and although the XP guest sends the request and wlan0 on the host receives a response from the DHCP server, the wlan0 -> XP NIC seems to fail. Tried with various virtual NIC drivers in XP as well as the paravirtual driver.

[regeland]

Forgot to add: When setting a static IP, GW, and DNS server in XP guest, all networking is fine. So I have to assume the problem lies with the UDP translation of DHCP packets somewhere in the linux VirtualBox networking stack?