Error in OFDM transmit and receive for Xilinx RFSOC Model

Hello, I am trying to run OFDM transmit and receive for xilinx rfsoc example using ZCU111 board +XM500 Balun card. I have deployed the top model and then after loading the bitstream I got soc_OFDM_top_sw model, I have run the model in external mode by clicking Monitor & Tune. Now I am getting the error below, I've tried pinging the board and got response. I am new to this, please help me find a solution.

Error occurred while executing External Mode MEX-file 'ext_comm':
Failed to connect to the target. Possible reasons for the failure:
a) The target is not switched on.
b) The target is not connected to your host machine.
c) The application for the model is not running on the target. You might have clicked the Stop button. If the Run button is not dimmed, click it. Otherwise, click the Build button, which downloads and runs your application on the target.

Caused by:
An error occurred attempting to open an rtIOStream. More detail may be reported in the MATLAB command window
Component:Simulink | Category:Block diagram error
Unable to connect to the 'Xilinx Zynq UltraScale+ RFSoC ZCU111 Evaluation Kit' target for 'soc_OFDM_top_sw'.

[Alexander]

What does your LAN setup look like?

I found that deployment resets the board, which leads to a different IP address being assigned when using DHCP. Perhaps MATLAB it is using the original IP?

I heard that matlab will try to use the serial port on failure to compensate for this issue, but it has not worked for me.