LOWPAN_NHC_UDP_4BIT_MASK  121 net/6lowpan/nhc_udp.c 	if (((ntohs(uh->source) & LOWPAN_NHC_UDP_4BIT_MASK) ==
LOWPAN_NHC_UDP_4BIT_MASK  123 net/6lowpan/nhc_udp.c 	    ((ntohs(uh->dest) & LOWPAN_NHC_UDP_4BIT_MASK) ==