https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243164
--- Comment #3 from Conrad Meyer <c...@freebsd.org> ---
Ah. I wonder if this is it?
459 #define MASK(m) ((uint32_t)~((1 << (32 - (m))) - 1))
460
461 static int
462 conf_amask_eq(const void *v1, const void *v2, size_t len, int mask)
463 {
464 const uint32_t *a1 = v1;
465 const uint32_t *a2 = v2;
466 uint32_t m;
467 int omask = mask;
468
469 len >>= 2;
470 switch (mask) {
471 case FSTAR:
472 if (memcmp(v1, v2, len) == 0)
473 return 1;
474 goto out;
// Above is definitely wrong, only compares the first 1/4 of the address
// bytes. Maybe that's what we're seeing?
...
484 for (size_t i = 0; i < len; i++) {
485 if (mask > 32) {
486 m = htonl((uint32_t)~0);
487 mask -= 32;
488 } else if (mask) {
489 m = htonl(MASK(mask));
490 mask = 0;
493 if ((a1[i] & m) != (a2[i] & m))
494 goto out;
// This part seems fine for v4, but I'm not sure if it's correct for v6.
495 }
496 return 1;
497 out:
...
506 return 0;
--
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