Hi @testmb1 ,
Thank you for your interest in the NXP MIMXRT product, I would like to provide service for you.
I search internally, didn't find the related sample code.
I also checked with our internal expert, and he also mentioned we don't have it.
NXP SDK just provide the SDK lwip related demo, to other protocol, may need the customer to migrate by themselves. I found a segger reference resource online that you might consider if it would be helpful for your migratation.
https://www.segger.cn/evaluate-our-software/nxp/nxp-lpcxpresso-om13098/
https://www.segger.cn/products/connectivity/emnet/add-ons/upnp/
Best regards,
Gavin
