ADDCARRY           86 netinet/in4_cksum.c #define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)
ADDCARRY           47 netinet/in_cksum.c #define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)
ADDCARRY           77 netinet6/in6_cksum.c #define ADDCARRY(x)  (x > 65535 ? x -= 65535 : x)