Questions about the Nic_bridge and VirtualBox bug

[Stefan Kalkowski]

Thanks to Charles for reporting!
And thanks to Christian for investigating the root cause!

This is the second bug in the net/*.h files of the nic_bridge and it
indicates that we have to review these old rotten piece of network
headers. Mea culpa!

Regards
Stefan

On 06/15/2016 12:30 PM, Christian Helmuth wrote:
> Hello Charles,
> 
> On Wed, Jun 15, 2016 at 11:22:01AM +0200, Charles HH wrote:
>> The patch worked. The options are now parsed correctly.
> 
> Great.
> 
>> I still have a problem with the DHCP server sending the Offer to the VM mac
>> address (taken from the DHCP options I would assume) instead of to the
>> bridge. I think that's quite an unusual behavior for a DHCP server though,
>> so I don't think it deserves particular attention...
> 
> This may result from the simplicity of our current bridge
> implementation. It may be better to implement DHCP relaying
> 
>   https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol#DHCP_relaying
> 
> to force the DHCP server to send an unicast reply to the bridge MAC
> address. Also, it may be the case that our implementation misses one
> picky detail when constructing the DHCP request packet.
> 
> Regards
> 

-- 
Stefan Kalkowski
Genode Labs

http://www.genode-labs.com/ · http://genode.org/