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Bug#652573: busybox-udeb: debian stable busybox udhcp client does not support /32 netmasks


as far as I am aware, the problem is NOT the dhcp-client of busybox
itself but the hook-script used in debian. Find attached a hook-script
which I use in my home-brewn rescue and which used to work also with
/32 (sorry don't have an environment to test at hand, so I could not
proove). So IMHO actually only the hook-script in debian is screwed up.


On 02.06.2012 22:26, Conrad Wood wrote:
> On 2 Jun 2012, at 22:14, Michael Tokarev wrote:
>> On 02.06.2012 23:59, Conrad Wood wrote: []
>>> In some "cloud" environments, including ours, we configure an
>>> ethernet device with a single /32 IP Address. Say, for example
>>> The Default Gateway is, for example,
>>> The linux kernel and BSD happily work as desired and send out
>>> an arp request out of the ethernet device and route
>>> _everything_ to the default gateway. Configuring this manually
>>> is straightforward and works as desired.
>>> Using the ISC-DHCP client also works as desired. It picks up
>>> IP, Netmaks and gateway perfectly well.
>>> However, in the installer, with the busybox dhcp client, it
>>> stalls and claims it is unable to configure the network
>>> interfaces. Anything _apart_ from /32 (say /31, /30 etc.) works
>>> ok. But then the gateway won't be reachable, as the kernel then
>>> tries to do 'propper(?)' routing instead of just forwarding the
>>> packets.
>> Did you try using busybox dhcp client on an already installed
>> system, as opposed to the debian installer?
>> I just tried - dnsmasq as dhcp server, and squeeze busybox - it
>> accepts the /32 netmask just fine and configures the interface
>> accordingly.  I had to overwrite "netmask" option on the server,
>> setting it explicitly, and I verified with tcpdump that the
>> server sends correct DHCP reply with the right netmask.
>> But I'm not actually sure how debian installer configures the
>> network...
>> Thanks,
>> /mjt
> Hm, I believe we did. +CC Jens Ott, our network guru, I think he
> did try. Let's see what he has to say about that ;)
> Conrad
> Conrad Wood (Deputy CTO, Head of Research & Innovations)
> ProfitBricks GmbH Greifswalder Str. 207 D - 10405 Berlin
> Office:	 	+49 30 51 64 09 21 DDI:		+49 30 51 300 021 Email:
> conrad.wood@profitbricks.com URL:	 	http://www.profitbricks.com/ 
> Sitz der Gesellschaft: Berlin Registergericht: Amtsgericht
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> Achim Weiss

Attachment: udhcp-script.tpl
Description: application/vnd.groove-tool-template

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