Use current netif address in NetBIOS response (esp8266#8622)

* fix 8139 netbios in AP mode

* take the current if addr

* handle enabled ipv6

Co-authored-by: pablo <pablomartikian@hotmail.com>

Author: 2 people

libraries/ESP8266NetBIOS/ESP8266NetBIOS.cpp

@@ -212,8 +212,7 @@ void ESP8266NetBIOS::_recv(udp_pcb *upcb, pbuf *pb, const ip_addr_t *addr, uint1
                     nbnsa.NBNSA_TIMETOLIVE = LWIP_PLATFORM_HTONL(300000UL);// Time to live (30000 sekund)
                     nbnsa.NBNSA_LENGTH = LWIP_PLATFORM_HTONS(6);
                     nbnsa.NBNSA_NODEFLAGS = LWIP_PLATFORM_HTONS(0);
-                    nbnsa.NBNSA_NODEADDRESS = WiFi.localIP(); // ulozime nasi IP adresu
-
+                    nbnsa.NBNSA_NODEADDRESS = ip_addr_get_ip4_u32(&ip_current_netif()->ip_addr);
                     pbuf* pbt = pbuf_alloc(PBUF_TRANSPORT, sizeof(nbnsa), PBUF_RAM);
                     if(pbt != NULL) {
                         uint8_t* dst = reinterpret_cast<uint8_t*>(pbt->payload);