No client hardware address?

[Shane Kerr]

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Ashley M. Kirchner wrote:
> 
>    Let me start off by saying I highly doubt this is a DHCP problem.  I
> repeat, I do NOT suspect DHCP at all here.
> 
>    Having said that...  I have one machine on the network that when
> first turned on will request an IP as I would expect it would:
> 
> dhcpd: DHCPDISCOVER from 00:08:74:2d:fc:27 via eth1
> dhcpd: DHCPOFFER on 192.168.1.139 to 00:08:74:2d:fc:27 (dellscan) via eth1
> dhcpd: Added new forward map from flatbed.int.pcraft.com to 192.168.1.139
> dhcpd: added reverse map from 139.1.168.192.in-addr.arpa. to
> flatbed.int.pcraft.com
> dhcpd: DHCPREQUEST for 192.168.1.139 (192.168.1.1) from
> 00:08:74:2d:fc:27 (dellscan) via eth1
> dhcpd: DHCPACK on 192.168.1.139 to 00:08:74:2d:fc:27 (dellscan) via eth1
> 
> 
>    But then, several hours later, when the lease expires, I would start
> seeing these messages show up for about 3 to 5 seconds then stop:
> 
> dhcpd: DHCPINFORM from 192.168.1.139 via eth1
> dhcpd: DHCPACK to 192.168.1.139 (<no client hardware address>) via eth1
> dhcpd: DHCPINFORM from 192.168.1.139 via eth1
> dhcpd: DHCPACK to 192.168.1.139 (<no client hardware address>) via eth1
> dhcpd: DHCPINFORM from 192.168.1.139 via eth1
> dhcpd: DHCPACK to 192.168.1.139 (<no client hardware address>) via eth1
> 
> 
>    So, can anyone think of why the machine would quit sending it's
> hardware address?  A reboot will fix the problem ... every time.  Only
> to re-appear again when the lease expires hours later...

This is actually kind of weird. Clients send DHCPINFORM when they have an IP
address configured elsewhere (like a static address, or something else). So the
client should be sending DHCPREQUEST, not DHCPINFORM.

Looks like a bug in the client.

- --
Shane
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