Hello Gino Gatto,
MPTCP hasn't been supported in Linux SDK 1.7, and also no plan to support it in SDK 1.8, probably you could apply this MultiPath TCP - Linux Kernel implementation : Main - Release 88 browse on Linux Kernel.
For QorIQ Linux SDK feature list, please refer to Freescale Technical Information Center
Software and Tools information Center->QorIQ 1.7 documentation->SDK Overview->Feature Support Matrix.
Have a great day,
Yiping
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