Siemens SIMATIC S7-1500 Operating Instructions Manual page 61

4. To assign new, random MAC addresses, add the parameter "-a" or "-t" to the command
"./s7_vnic_macconfig".
– Use the parameter "-a" to assign new MAC addresses for both interfaces.
– Use the parameter "-t" and the target name "Linux" or "SWCPU" to assign new MAC
5. To apply the changes, restart the PC.
Result
MAC addresses are assigned from a pool from "28-63-36-78-B0-00" to "28-63-36-78-BF-FF".
CPU 1505SP (F) Ready4Linux Version 2.7
Operating Instructions, 05/2019, A5E46864285-AA
addresses for the respective interface.
Example of changing the MAC address of the Siemens RT-VMM Network Adapter:
./s7_vnic_macconfig -m /opt/SIEMENS -t LINUX
The assigned MAC address is a random MAC address from the MAC address pool.
Note
Assign a specific MAC address
To assign a specific MAC address from a pool of "28-63-36-78-B0-00" to "28-63-36-
78-BF-FF", add the parameter "--mac-addr" and the desired MAC address to the
destination name.
Example:
./s7_vnic_macconfig -m /opt/SIEMENS -t LINUX --mac-addr
28:63:36:78:bb:7f
Commissioning in STEP 7
5.4 Communication between Linux and CPU
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