--- tmp/nfs-utils-1.3.2/support/export/hostname.c	2015-01-30 21:42:15.000000000 +0100
+++ src/support/export/hostname.c	2021-04-02 16:37:15.698495198 +0200
@@ -352,7 +352,6 @@ host_numeric_addrinfo(const struct socka
 	 * getaddrinfo(AI_NUMERICHOST) never fills in ai_canonname
 	 */
 	if (ai != NULL) {
-		free(ai->ai_canonname);		/* just in case */
 		ai->ai_canonname = strdup(buf);
 		if (ai->ai_canonname == NULL) {
 			freeaddrinfo(ai);