Routing Question

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k3067e3
DD-WRT Novice


Joined: 18 Jul 2012
Posts: 15

PostPosted: Mon May 22, 2023 20:30    Post subject: Routing Question Reply with quote
Hi,

I am on Netgear R9000 with connection to WAN.
IP internal is 10.76.0.254

In the basement I have an WNDR3700V4 with IP adress 10.76.0.252 connected to the R9000 router via LAN. (WAN connection type is disabled)

All devices are on build r52596.

To WNDR3700 is a IoT Device connected via LAN, which I have assigned via DHCP static lease IP 10.76.0.173

Now I have the following question. For the IoT device is a software available to monitor the status, but this software is only suitable with connection to the IP 192.168.16.254 - this is hardcoded in the software.

Can you help me, how to solve this with I kind of NAT or routing, whatever the correct wording is?

Regards!
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k3067e3
DD-WRT Novice


Joined: 18 Jul 2012
Posts: 15

PostPosted: Tue May 23, 2023 14:12    Post subject: Reply with quote
I already tried different things with routing policies, but I think I don't know what I am doing, so nothing ist working.

Can anybody help?
jtbr
DD-WRT User


Joined: 09 Mar 2017
Posts: 100

PostPosted: Tue May 23, 2023 14:42    Post subject: Reply with quote
If the IoT device has a hard-coded static IP, it seems to me the only option is to change the whole network subnet to match it. So make the network 192.168.16.0/24 instead of 10.76.0.0/16. Then make sure that DHCP will never assign the IoT device's IP to anything else.
k3067e3
DD-WRT Novice


Joined: 18 Jul 2012
Posts: 15

PostPosted: Tue May 23, 2023 16:44    Post subject: Reply with quote
No, IoT has IP 10.76.0.173 assigned via DHCP static lease.
But the monitoring software connects to 192.168.16.254 and this IP is not configurable in the software running on my Windows PC.

The device has a built in hotspot, where you normally connect the computer. But for this I have to be in the proximity.
And I know from other users they use this method via LAN connection and a route in their Fritz Box Router.

But I do not know how to do this with dd wrt in my setup
k3067e3
DD-WRT Novice


Joined: 18 Jul 2012
Posts: 15

PostPosted: Mon May 29, 2023 10:22    Post subject: Reply with quote
Still looking for a solution...
Can anyone help?
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6435
Location: UK, London, just across the river..

PostPosted: Mon May 29, 2023 12:38    Post subject: Reply with quote
k3067e3 wrote:
Still looking for a solution...
Can anyone help?


as it was suggested, change the local IP subnet to 192.168.16.0/24 this will include 10.76.16.254.. Cool that is the best advice so far, unless you missed to tell us something or misinterpreted it..

what is the R9000 static IP is it different from 192.168.16.0/24 ?

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