Allow alphanumeric TLDs in test for now

src/test/test_util.c

@@ -5589,11 +5589,10 @@ test_util_hostname_validation(void *arg)
   tt_assert(!string_is_valid_hostname("[2a00:1450:401b:800::200e]"));
   tt_assert(!string_is_valid_hostname("2a00:1450:401b:800::200e"));
 
-  // Last label of a hostname is required to be alphabetic according to
-  // RFC 1123 Section 2.1.
-  tt_assert(!string_is_valid_hostname("lucky.13"));
-  tt_assert(!string_is_valid_hostname("luck.y13"));
-  tt_assert(!string_is_valid_hostname("luck.y13."));
+  // We allow alphanumeric TLDs. For discussion, see ticket #25055.
+  tt_assert(string_is_valid_hostname("lucky.13"));
+  tt_assert(string_is_valid_hostname("luck.y13"));
+  tt_assert(string_is_valid_hostname("luck.y13."));
 
   // We allow punycode TLDs. For examples, see
   // http://data.iana.org/TLD/tlds-alpha-by-domain.txt