issues with ipv6 and DUID
Cory Coager
ccoager at gmail.com
Thu Apr 4 22:35:57 UTC 2013
Client OS is Ubuntu 12.04, client version 4.1.ESV-R4-0ubuntu5.6. It
seems to support ipv6 as I can get an ipv6 address from the server and
basic networking seems to function.
Here is the server logs for a release and renew:
Apr 4 22:26:48 server dhcpd: Release message from
fe80::5054:ff:feea:db36 port 546, transaction ID 0x88BFCA00
Apr 4 22:26:48 server dhcpd: Client
00:01:00:01:18:e8:e9:79:52:54:00:ea:db:36 releases address
fde8:cceb:ccfe:b5b4:238a:691f:17d3:24ae, which is not leased to it.
Apr 4 22:26:48 server dhcpd: Sending Reply to fe80::5054:ff:feea:db36
port 546
Apr 4 22:26:49 server dhcpd: Solicit message from
fe80::5054:ff:feea:db36 port 546, transaction ID 0x9E590C00
Apr 4 22:26:49 server dhcpd: Sending Advertise to
fe80::5054:ff:feea:db36 port 546
Apr 4 22:26:50 server dhcpd: Request message from
fe80::5054:ff:feea:db36 port 546, transaction ID 0x6366E00
Apr 4 22:26:50 server dhcpd: Sending Reply to fe80::5054:ff:feea:db36
port 546
I haven't tried a packet capture yet.
I just tried with a /64 subnet, didn't make a difference.
fde8:cceb:ccfe:b5b4:238a:691f:17d3:2440 is the DHCP server which is also
serving DNS. There is no router involved in this subnet, all on the
same vlan.
On 04/04/2013 05:23 PM, Steven Carr wrote:
> What client are you using? Does this client fully support DHCPv6?
> You've indicated what the client log shows but what does the server
> logs show? What messages can you see in a packet capture?
>
> There was also some discussion a while back (possibly not on this
> list) but about potential issues with non /64 subnet sizes, in that
> the OS stack may not support anything other than a /64 given that for
> native SLAAC to work it requires /64.
>
> Steve
>
>
>
> On 2 April 2013 23:10, Cory Coager <ccoager at gmail.com
> <mailto:ccoager at gmail.com>> wrote:
>
> On 04/01/2013 09:15 PM, Cory Coager wrote:
>
> On 04/01/2013 10:03 AM, Simon Hobson wrote:
>
> AFAIK, the only reliable way of getting it is to wait for
> the client to boot, and get the DUID from the lease
> created (or the logfile ?). On a busy network, I'm not
> sure how you'd identify that specific client.
>
> Did you see the log I posted? I'm already do this and it
> doesn't seem to work.
>
>
> I just tried this again. The DUID from the DHCP logs matches up
> with what I have in the config file for a fixed address. However,
> it is assigning the client a random IP still.
>
> Has anyone gotten this to work? Is this a bug perhaps?
>
> I'm using version 4.1.ESV-R4-0ubuntu5.6 on Ubuntu 12.04.
>
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