5dba6ada91
if it is called on a TCP socket * with an IPv6 address and the socket is bound to an IPv4-mapped IPv6 address. * with an IPv4-mapped IPv6 address and the socket is bound to an IPv6 address. Thanks to Jonathan T. Leighton for reporting this issue. Reviewed by: bz gnn MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D9163