dhcpinform messages

[Douglas Armstrong]

Luc T. wrote:
> I just finished a dhcp server migration from a solaris to linux isc dhcp server.
>    
>   following is the configuration for subnet 10.0.2.0
>    
>   subnet 10.0.2.0 netmask 255.255.255.0  {
>         default-lease-time 86400;
>         option routers 10.0.2.1;
>         host 001993NN6D20 { hardware ethernet 00:19:93:NN:6D:20; fixed-address 10.0.2.92;}
>        }
>    
>   however, in my log file, I am seeing a lot of such information:
>   Jan 18 10:07:42 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:42 dm1 dhcpd: DHCPACK to 10.0.2.158 
>   Jan 18 10:07:42 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:42 dm1 dhcpd: DHCPACK to 10.0.2.158 
> Jan 18 10:07:42 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:42 dm1 dhcpd: DHCPACK to 10.0.2.158 
>   Jan 18 10:07:42 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:42 dm1 dhcpd: DHCPACK to 10.0.2.158 
> Jan 18 10:07:43 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:43 dm1 dhcpd: DHCPACK to 10.0.2.158 
>   Jan 18 10:07:43 dm1 dhcpd: DHCPINFORM from 10.0.2.158 via eth0
> Jan 18 10:07:43 dm1 dhcpd: DHCPACK to 10.0.2.158 
>    
>   why my dhcp server DHCPACK something it doesn't know about (I mean there is no entry for 10.0.2.158)? why these DHCPINFORM keep coming? thanks!
>
>              
>   Luc
>
>   
Quite often it is IE or other micro$oft products looking for system 
settings. Even if the box is set up with a static address it will stiill 
look for auto proxy and the like.

Doug Armstrong
www.ovationdata.com