Hi Jianbo, It seems your NEON acceleration of the example l3fwd is not compiling for ARMv7: examples/l3fwd/l3fwd_neon.h:113:6: error: implicit declaration of function ‘vaddvq_u16’
I am using gcc-linaro-6.3.1-2017.05-x86_64_arm-linux-gnueabihf. Is it something we can fix easily?