ntomask
extern int ntomask(int, int, u_32_t *);
ntomask($1.f, $5, $$.m.i6);
ntomask(frc->fr_family,
ntomask(frc->fr_family,
ntomask($$.f, $3, (u_32_t *)&$$.m);
if (ntomask(AF_INET, atoi(s + 1), &mask.s_addr) != 0)
if (ntomask(AF_INET6, $1,
if (ntomask(AF_INET, $1,
ntomask(AF_INET, i, &m.s_addr);