npfctl_parse_l2filt_opt
$$ = npfctl_parse_l2filt_opt(NULL, false, NULL, false, 0);
$$ = npfctl_parse_l2filt_opt($3, $2, $6, $5, $7);
$$ = npfctl_parse_l2filt_opt($3, $2, NULL, false, $4);
$$ = npfctl_parse_l2filt_opt(NULL, false, $3, $2, $4);
filt_opts_t npfctl_parse_l2filt_opt(npfvar_t *, bool, npfvar_t *,