On Dec 19 22:29:56, Damon McMahon wrote:
> Greetings,
>
> I have a troublesome DHCP client -- a Brother MFC-9420CN multifunction
> centre -- I'd like to troubleshoot. It's being assigned a lease
> including IP address and gateway address by dhcpd(8), but not a subnet
> mask.
>
> Here's the relevant section of dhcpd.conf:
>
> shared-network THE_OFFICE_LAN {
> use-host-decl-names on;
> option domain-name "office";
> option domain-name-servers 192.168.1.1;
> option ntp-servers ntp.office;
> option smtp-server mail.office;
>
> subnet 192.168.0.0 netmask 255.255.255.0 {
> default-lease-time 86400;
> max-lease-time 259200;
> option subnet-mask 255.255.255.0;
> option broadcast-address 192.168.0.255;
> option routers 192.168.0.1;
> range 192.168.0.64 192.168.0.127;
> host brothermfc {
> hardware ethernet 00:80:77:88:8b:59;
> fixed-address brothermfc.office;
> }
> }
> }
>
> Here's what happens in /var/log/daemon when it boots:
>
> Dec 19 22:08:58 wiggum dhcpd[26477]: DHCPDISCOVER from 00:80:77:88:8b:59 via
> xl0
> Dec 19 22:08:58 wiggum dhcpd[26477]: DHCPOFFER on 192.168.0.2 to
> 00:80:77:88:8b:59 via xl0
> Dec 19 22:08:58 wiggum dhcpd[26477]: DHCPREQUEST for 192.168.0.2 from
> 00:80:77:88:8b:59 via xl0
> Dec 19 22:08:58 wiggum dhcpd[26477]: DHCPACK on 192.168.0.2 to
> 00:80:77:88:8b:59 via xl0
>
> A laptop plugged into the same switch obtains its netmask just fine,
> so it could be a bug on the client, but I can't find any reference via
> the Brother support site or search engines to this issue.
>
> Does anyone have any further suggestions on how to troubleshoot this?
tcpdump the DHCP exchange to see what is really sent.
