diff --git a/network_data.h b/network_data.h
--- a/network_data.h
+++ b/network_data.h
@@ -226,6 +226,7 @@ void NetworkGetClientName(char *clientna
 uint NetworkCalculateLag(const NetworkClientState *cs);
 byte NetworkGetCurrentLanguageIndex(void);
 NetworkClientInfo *NetworkFindClientInfoFromIndex(uint16 client_index);
+NetworkClientInfo *NetworkFindClientInfoFromIP(const char *ip);
 NetworkClientState *NetworkFindClientStateFromIndex(uint16 client_index);
 unsigned long NetworkResolveHost(const char *hostname);