On 12/06/2014 23:06, Jon Gerdes wrote:
My new ISP only provides a /29 from which WAN always gets the first one
via PPPoE.
I put the second address from the /29 onto an interface and the
remaining four onto my externally facing systems.
You should be able to use the same IP address for both WAN and LAN
(Cisco calls this 'unnumbered': your PPP interface is using the IP
address from another interface)
192.0.2.1 = WAN interface of firewall
192.0.2.1/29 = LAN interface of firewall
192.0.2.2..6 = other devices
This saves the provider burning a /32 for the WAN (or even a /30
point-to-point subnet, old skool)
Regards,
Brian.
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