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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include "socket.h"
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#include "byte.h"
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#include "haveip6.h"
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#include "errno.h"
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#include "ip6.h"
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#ifndef IPV6_DROP_MEMBERSHIP
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#ifdef IPV6_LEAVE_GROUP
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#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
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#else
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#undef LIBC_HAS_IP6
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#endif
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#endif
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int socket_mcleave6(int s,const char ip[16])
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{
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#ifdef LIBC_HAS_IP6
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struct ipv6_mreq opt;
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#endif
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if (ip6_isv4mapped(ip))
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return socket_mcleave4(s,ip+12);
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#ifdef LIBC_HAS_IP6
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byte_copy(&opt.ipv6mr_multiaddr,16,ip);
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opt.ipv6mr_interface=0;
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return setsockopt(s,IPPROTO_IPV6,IPV6_DROP_MEMBERSHIP,&opt,sizeof opt);
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#else
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errno=EPROTONOSUPPORT;
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return -1;
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#endif
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}
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