[CentOS] Centos 7 dhcpd failure to allow a 2nd network over same interal nic

[John R Pierce]

On 1/16/2017 12:44 AM, Rob Kampen wrote:
>>
> Here's an idea - untested.
> set up a network on the single nic - say 192.168.55.xx/24
> set up the dhcp to offer leases from a subset of this network - say 
> 192.168.55.128/28
> set up fixed leases based upon mac address from the remainder of the 
> network - i.e. outside the subset above - e.g. 192.168.55.1/28
> then route / firewall as required - i.e. trusted known mac address 
> hence IP address allowed vs unknown guest given an IP address we can 
> block or otherwise handle.
> As indicated, this is not tested but if memory serves, dhcpd will 
> allow this kind of allocation. 

the untrusted wireless users will be able to access other LAN machines 
without going through the firewall.

-- 
john r pierce, recycling bits in santa cruz