diff --git a/wifi/addip.c b/wifi/addip.c
new file mode 100644
index 00000000..ca973ead
--- /dev/null
+++ b/wifi/addip.c
@@ -0,0 +1,27 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main() {
+	FILE *fd;
+	char *ip;
+	
+	if ((fd = fopen("/hotspot.socket", "a")) == NULL)
+         	goto erreur;
+	
+	if ((ip = getenv("REMOTE_ADDR")) == NULL)
+	        goto erreur;
+	
+	fprintf(fd, "%s\n", ip);
+	fflush(fd);
+	fclose(fd);
+	
+	printf("Location: https://wifi.crans.org/captifauthok.html\r\n");
+	printf("\r\n");
+	return 0;
+	
+erreur:
+	printf("Location: https://wifi.crans.org/captiferreur.html\r\n");
+	printf("\r\n");
+	return 0;
+}