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IPv4 NAT and LAN routing changed in Windows 12?

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The NIC card connecting client computers won't allow a static Default Gateway
address to be entered and the client's won't connect without it.

1. I'm Installing a simple Win 12 server to do NAT to give a group of computers
access to the internet.

2. The server is configured with only AD, DHCP and RRAS.  RRAS is set up
only to act only as an IPv4 LAN router with RAS disabled.


3. The server is connected to the internet via a very expensive
Cisco router with a static IP of 192.168.11.222 .  The connection NIC card in the
server is set up with:
 DHCP Enabled: No
 IPv4 Address: 192.168.11.222
 IPv4 Subnet Mask: 255.255.255.0
 IPv4 Default Gateway: 192.168.11.1
 IPv4 DNS Server: 192.168.11.1
 IPv4 WINS Server:

4. I am attempting to set up the NIC card on the server connecting the computer
clients as:
 DHCP Enabled: No
 IPv4 Address: 192.168.20.1
 IPv4 Subnet Mask: 255.255.255.0
 IPv4 Default Gateway: 192.168.20.1   <---problem
 IPv4 DNS Server: 192.168.20.1
 IPv4 WINS Server:
Upon saving, it won't allow the Default Gateway IP to be entered.
It states "Warning - Multiple default gateways are intended to provide redundancy to a single network (such as an intranet or the Internet). They will not function properly when the gateways are on two separate, disjoint networks (such as one on your intranet and one on the Internet)."
It gives me a "Yes" "No" choice but either way the IP isn't placed ad the Default Gateway.

5. The client computers won't connect without a default gateway.  If I give them
static IPs including the gateway they connect just fine. (But obviously can't have
static IPs on all the clients.)

Can anyone help?


Donny


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