Fixed LWIPStack socket_sendto member to fail if interface IP4/6 version differ from destination adress IP version

Author: tymoteuszblochmobica

features/lwipstack/LWIPStack.cpp

@@ -488,12 +488,18 @@ nsapi_size_or_error_t LWIP::socket_sendto(nsapi_socket_t handle, const SocketAdd
 {
     struct mbed_lwip_socket *s = (struct mbed_lwip_socket *)handle;
     ip_addr_t ip_addr;
+    nsapi_addr_t interface_addr;
 
     nsapi_addr_t addr = address.get_addr();
     if (!convert_mbed_addr_to_lwip(&ip_addr, &addr)) {
         return NSAPI_ERROR_PARAMETER;
     }
 
+    convert_lwip_addr_to_mbed(&interface_addr, get_ip_addr(true, &default_interface->netif));
+    if(addr.version != interface_addr.version){
+         return NSAPI_ERROR_PARAMETER;
+    }
+
     struct netbuf *buf = netbuf_new();
 
     err_t err = netbuf_ref(buf, data, (u16_t)size);