> On 7 September 2020, at 13:57, Michael Tuexen
> <michael.tue...@lurchi.franken.de> wrote:
>
> For UDP and TCP you always get IPv6 addresses on AF_INET6 sockets. If you are
> actually using IPv4, IPv4-mapped IPv6 addresses are used. For SCTP you an
> choose if you want IPv4-mapped IPv6 addresses or IPv4 address. It is
> controlled by
> the socket option specified in
> https://tools.ietf.org/html/rfc6458#section-8.1.15
I used:
optval = 1;
rc = setsockopt (recv_fd, IPPROTO_IPV6, SCTP_I_WANT_MAPPED_V4_ADDR,
&optval, sizeof(optval));
FreeBSD 12.1. Result was "Operation not supported"
-- Doug
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