rsn_cipher
static const char * rsn_cipher(const u_int8_t *);
printf(" mc:%s", rsn_cipher(ie));
printf("%s%s", sep, rsn_cipher(ie));
w = rsn_cipher(frm, &rsn->rsn_mcastkeylen);
w |= 1 << rsn_cipher(frm, &rsn->rsn_ucastkeylen);