[Bug 248579] accept(2): IPv4 connections fail (IPv6 connections succeed) with dual IPv4/IPv6 TCP servers

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248579

Michael Tuexen <tuexen at freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |tuexen at freebsd.org

--- Comment #3 from Michael Tuexen <tuexen at freebsd.org> ---
(In reply to rec from comment #1)
Instead of changing a system wide setting you can also use the
IPPROTO_IPV6-level socket option IPV6_V6ONLY to allow handling IPv4 traffic
using the IPv6 socket by calling in make_listen():

int no = 0;
setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, no, sizeof(int));

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