We have a STM32F7 with LAN9354 3-port switch on our board. I created a custom PHY driver for the LAN device based off a similar LAN chip. In general, networking works. We can setup static IP, ping both to and from the board, also UDP connection is good.
We're using ThreadX and NetX Duo from https://github.com/STMicroelectronics/x-cube-azrtos-f7
When I add a second IP instance using nx_ip_create, only the second IP address is accessible. If I swap the code around (create ip1 before ip0), then the second IP address is only available. When I say 'available', I mean through ping. If I use arp command on my Raspberry PI, I can see both IP addresses with the same MAC address.
This is not the exact code, just a portion. The remainder of the code properly sets up pointer allocated from byte pool, enabled icmp for both instances, arp, etc. without errors.
ret = nx_ip_create(&IpInstance0, "NetX IP Instance 0", IP_ADDRESS(10,24,129,49), 0xFFFFF000,
&EthPool, nx_stm32_eth_driver,
pointer, 2 * DEFAULT_MEMORY_SIZE, DEFAULT_PRIORITY);
ret = nx_ip_create(&IpInstance1, "NetX IP Instance 1", IP_ADDRESS(10,24,129,50), 0xFFFFF000,
&EthPool, nx_stm32_eth_driver,
pointer, 2 * DEFAULT_MEMORY_SIZE, DEFAULT_PRIORITY);
