Unable to Ping / Shared Network

Dave Brenner david at toledotel.com
Wed Jul 6 16:58:15 UTC 2011

On 7/6/2011 9:10 AM, Barry Stear wrote:

> I have my isc-dhcp-server setup as a shared network with two subnets that
> are using the same interface (eth0). ETH0 is connected to a 5 port switch
> which connects Linksys router. The problem I have is that I cannot ping
> anything on the internet when I receive an IP address in the 192.168.100.X
> subnet. I am unable to ping from the 192.168.100.X subnet.
>   I tried changing the 'options routers' for the 192.168.100.X subnet to
> and that didn't make a difference.

If you have two subnets, then you need two gateways.  This is 
accomplished with a router that can have multiple IPs assigned to a 
given interface.  If your Linksys can do that, great.  Just have it 
answer on both and and call it good.  If it 
can't do that and you don't have a compelling reason to use a second 
subnet, then keep things simple and ditch the second subnet.

Dave Brenner - david at toledotel.com
The Toledo Telephone Company, Inc.

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