Hi, I have been using Virtual Box for a little while now and have generally found things simple to get up and running. But in all working configurations I have used Static IP's. Yesterday I started experimenting with using DHCP for my guests.
My Host is Centos 5.2 (64 Bit) running the lastest updates with VirtualBox-2.0.6_39765_rhel5-1.x86_64 and Kernel 2.6.18-92.1.18.el5. As a first step I disabled my FireWall and enabled IP Forwarding ( /proc/sys/net/ipv4/ip_forward ). I then installed a CentOS 5.2 (32 Bit Guest) using CentOS-5.2-i386-bin-DVD.iso and then using the linux askmethod kernel option so that I could get it to install via http from a server on our network. This worked so I know at this point the guest was requesting and getting a DHCP address. Once the installed system rebooted it could not receive an IP address. The strange thing being that if I logged into the guest and restarted networking it got an address just fine. After some investigation I thought this might be a DHCP timeout issue so I set the guest to have a really long DHCP Time Out. This made no differnce. I was then out of Logical Ideas so I thought why don't I just try changing the Network card that VirtualBox is presenting to the system. So I changed the card from the default to the Intel Pro/1000 T Server and without any further changes things started working. Thinking that I had found the solution I decided to try the other available cards and see which ones would work. None of them did. And at each stage after it didn't work I would configure a static address and confirm that I had a working network connection (which I always did ) I then thought ok go back to the configuration that works, unfortunately this also decided it didn't want to work anymore. I was completely stumped. So I tried restarting my Host. After doing this, disabling the Firewall and Enabling IP forwarding I started up the guest that I had previously installed and everything worked. I have experimented with this further and it seems that DHCP will work happily for some time and then just die. Once it dies a restart of the host seems to be the only way to restore service. Can anyone give me any clues as to why this might be happening ? Is it a know issue ? Does anyone have any suggestions on how I can isolate whats happening so that I can submit a bug report more useful than this ramble ? Thank you and have a nice day :) _______________________________________________ vbox-users mailing list [email protected] http://vbox.innotek.de/mailman/listinfo/vbox-users
