[lug] Comcast DHCP

[Bucky Carr]

Where is the IPv6? If you have a residential account they won't issue 
you an IPv4 address anymore.


On 6/23/2021 1:08 PM, Steve Sullivan wrote:
> Hi, we moved from Boulder to Lafayette and now the Comcast
> service sort of works, but it seems to have trouble with DHCP.
>
> I've tried two setups.  Both are all ethernet, no wifi.
>
> A.
> comcast modem -- Ubuntu laptop
> Works in Boulder and Lafayette.
> Laptop ip address is 73.243.111.222
>
> B.
> comcast modem -- TPLink router -- Ubuntu laptop
> Works in Boulder, fails in Lafayette.
> Laptop ip address is 192.168.1.100.
> Logging into the TPLink router, I find ...
>      LAN:
>        IP Address:	192.168.1.1
>        Subnet Mask:	255.255.255.0
>      WAN:
>        IP Address:	0.0.0.0	 Dynamic IP
>        Obtaining network parameters...
>        Subnet Mask:	0.0.0.0
>        Default Gateway:	0.0.0.0
>        DNS Server:	0.0.0.0 , 0.0.0.0
>
> Although setup B worked in Boulder, it doesn't in Lafayette.
> I'm guessing the TPLink router never gets a DHCP address from the modem.
>
> I've tried two different TPLink routers with the same results,
> and have tested all the ethernet cables.
>
> Any thoughts?

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