| lwIP
    2.1.2
    Lightweight IP stack | 
| Macros | |
| #define | MDNS_MAX_SERVICES 1 | 
| #define | MDNS_RESP_USENETIF_EXTCALLBACK LWIP_NETIF_EXT_STATUS_CALLBACK | 
| #define | MDNS_DEBUG LWIP_DBG_OFF | 
| #define MDNS_DEBUG LWIP_DBG_OFF | 
MDNS_DEBUG: Enable debugging for multicast DNS.
| #define MDNS_MAX_SERVICES 1 | 
LWIP_MDNS_RESPONDER==1: Turn on multicast DNS module. UDP must be available for MDNS transport. IGMP is needed for IPv4 multicast.The maximum number of services per netif
| #define MDNS_RESP_USENETIF_EXTCALLBACK LWIP_NETIF_EXT_STATUS_CALLBACK | 
MDNS_RESP_USENETIF_EXTCALLBACK==1: register an ext_callback on the netif to automatically restart probing/announcing on status or address change.