Allow hostnames that are IP addresses with a netmask even when

running with --skip-name-resolve. (Bug #8471)

mysql-test/r/skip_name_resolve.result

+GRANT ALL ON test.* TO mysqltest_1@'127.0.0.1/255.255.255.255';
+SHOW GRANTS FOR mysqltest_1@'127.0.0.1/255.255.255.255';
+Grants for mysqltest_1@127.0.0.1/255.255.255.255
+GRANT USAGE ON *.* TO 'mysqltest_1'@'127.0.0.1/255.255.255.255'
+GRANT ALL PRIVILEGES ON `test`.* TO 'mysqltest_1'@'127.0.0.1/255.255.255.255'
+REVOKE ALL ON test.* FROM mysqltest_1@'127.0.0.1/255.255.255.255';
+DROP USER mysqltest_1@'127.0.0.1/255.255.255.255';

mysql-test/t/skip_name_resolve-master.opt

+--skip-name-resolve

mysql-test/t/skip_name_resolve.test

+# Bug #8471: IP address with mask fail when skip-name-resolve is on
+GRANT ALL ON test.* TO mysqltest_1@'127.0.0.1/255.255.255.255';
+SHOW GRANTS FOR mysqltest_1@'127.0.0.1/255.255.255.255';
+REVOKE ALL ON test.* FROM mysqltest_1@'127.0.0.1/255.255.255.255';
+DROP USER mysqltest_1@'127.0.0.1/255.255.255.255';

sql/sql_acl.cc

@@ -1339,7 +1339,7 @@ bool hostname_requires_resolving(const char *hostname)
     return FALSE;
   for (; (cur=*hostname); hostname++)
   {
-    if ((cur != '%') && (cur != '_') && (cur != '.') &&
+    if ((cur != '%') && (cur != '_') && (cur != '.') && (cur != '/') &&
 	((cur < '0') || (cur > '9')))
       return TRUE;
   }