> On 22. Apr 2020, at 10:38, Matt Caswell <matt@xxxxxxxxxxx> wrote:
>
>
>
> On 21/04/2020 23:45, Michael Tuexen wrote:
>>> Looks like the failing call is here:
>>>
>>> if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
>>> (const void *)&on, sizeof(on)) != 0) {
>> Can you provide a pointer to the code?
>
> Yes, its here:
>
> https://github.com/openssl/openssl/blob/fa555aa8970260c3e198d91709b2d4b3e40f8fa8/crypto/bio/b_sock2.c#L267-L282
OK. Thanks.
Could it be that on == 0, when you do the setsockopt() call? Disabling IPV6_V6ONLY seems not to be supported
on OpenBSD:
>From sys/netinet6/ip6_output.c:
case IPV6_V6ONLY:
/*
* make setsockopt(IPV6_V6ONLY)
* available only prior to bind(2).
* see ipng mailing list, Jun 22 2001.
*/
if (inp->inp_lport ||
!IN6_IS_ADDR_UNSPECIFIED(&inp->inp_laddr6)) {
error = EINVAL;
break;
}
/* No support for IPv4-mapped addresses. */
if (!optval)
error = EINVAL;
else
error = 0;
break;
I don't see a bug in OpenBSD here, or a strange behaviour. OpenBSD just does not support mapped addresses.
Best regards
Michael
>
> Matt
