Wacky DHCP values that work in windows but not in FreeBSD

[security]

Julian Elischer wrote:
> Doug Barton wrote:
>> Howdy,
>>
>> I usually have a wireless router connected directly to the AT&T/Yahoo
>> DSL modem but last night I wanted to do some debugging so I plugged my
>> laptop directly into the modem (after powering off the modem, etc.).
>>
>> The values I got back from DHCP not only don't make sense, they didn't
>> work in FreeBSD at all. Dual-booting to Windows showed that the values
>> I saw from DHCP were "correct," and somehow they managed to work.
>> Taking a closer look at the router after I plugged it back in showed
>> the same.
>>
>>         Dhcp Enabled. . . . . . . . . . . : Yes
>>         Autoconfiguration Enabled . . . . : Yes
>>         IP Address. . . . . . . . . . . . : 76.212.147.xxx
>>         Subnet Mask . . . . . . . . . . . : 255.255.0.0
>>         Default Gateway . . . . . . . . . : 151.164.184.xxx
>
> huh?
>
> only way this could work would be if it was marked as "point to point"
> I think..
>
>>         DHCP Server . . . . . . . . . . . : 192.168.1.xxx
>>         DNS Servers . . . . . . . . . . . : 192.168.1.xxx
>>
>> Can anyone tell me how they managed to get this to work in Windows,
>> and suggest where to look to get it working in FreeBSD?
>>
>>
>> Doug
>>
ATT uses PPPoE on their modems.  Did your router have any special PPPoE
settings?

jim