ws2_32: Move the setsockopt(IPV6_UNICAST_IF) implementation to ntdll.

dlls/ntdll/unix/socket.c

@@ -1891,6 +1891,9 @@ NTSTATUS sock_ioctl( HANDLE handle, HANDLE event, PIO_APC_ROUTINE apc, void *apc
 #ifdef IPV6_UNICAST_IF
         case IOCTL_AFD_WINE_GET_IPV6_UNICAST_IF:
             return do_getsockopt( handle, io, IPPROTO_IPV6, IPV6_UNICAST_IF, out_buffer, out_size );
+
+        case IOCTL_AFD_WINE_SET_IPV6_UNICAST_IF:
+            return do_setsockopt( handle, io, IPPROTO_IPV6, IPV6_UNICAST_IF, in_buffer, in_size );
 #endif
 
         default:

dlls/ws2_32/socket.c

@@ -3642,11 +3642,6 @@ int WINAPI WS_setsockopt(SOCKET s, int level, int optname,
         case WS_IPV6_MULTICAST_LOOP:
             return server_setsockopt( s, IOCTL_AFD_WINE_SET_IPV6_MULTICAST_LOOP, optval, optlen );
 
-#ifdef IPV6_UNICAST_IF
-        case WS_IPV6_UNICAST_IF:
-#endif
-            convert_sockopt(&level, &optname);
-            break;
         case WS_IPV6_PROTECTION_LEVEL:
             FIXME("IPV6_PROTECTION_LEVEL is ignored!\n");
             return 0;
@@ -3654,6 +3649,9 @@ int WINAPI WS_setsockopt(SOCKET s, int level, int optname,
         case WS_IPV6_UNICAST_HOPS:
             return server_setsockopt( s, IOCTL_AFD_WINE_SET_IPV6_UNICAST_HOPS, optval, optlen );
 
+        case WS_IPV6_UNICAST_IF:
+            return server_setsockopt( s, IOCTL_AFD_WINE_SET_IPV6_UNICAST_IF, optval, optlen );
+
         case WS_IPV6_V6ONLY:
         {
             union generic_unix_sockaddr uaddr;

include/wine/afd.h

@@ -220,6 +220,7 @@ struct afd_get_events_params
 #define IOCTL_AFD_WINE_GET_IPV6_UNICAST_HOPS            WINE_AFD_IOC(275)
 #define IOCTL_AFD_WINE_SET_IPV6_UNICAST_HOPS            WINE_AFD_IOC(276)
 #define IOCTL_AFD_WINE_GET_IPV6_UNICAST_IF              WINE_AFD_IOC(277)
+#define IOCTL_AFD_WINE_SET_IPV6_UNICAST_IF              WINE_AFD_IOC(278)
 
 struct afd_create_params
 {