diff -u1 -Nar curl-8.1.1/lib/socks.c curl-8.1.1-patched/lib/socks.c
--- curl-8.1.1/lib/socks.c	2023-05-22 19:15:11.000000000 +0300
+++ curl-8.1.1-patched/lib/socks.c	2024-03-03 13:32:42.814284316 +0200
@@ -590,5 +590,5 @@
     if(!socks5_resolve_local && hostname_len > 255) {
-      infof(data, "SOCKS5: server resolving disabled for hostnames of "
-            "length > 255 [actual len=%zu]", hostname_len);
-      socks5_resolve_local = TRUE;
+      failf(data, "SOCKS5: the destination hostname is too long to be "
+            "resolved remotely by the proxy.");
+      return CURLPX_LONG_HOSTNAME;
     }
@@ -906,3 +906,3 @@
         socksreq[len++] = 3;
-        socksreq[len++] = (char) hostname_len; /* one byte address length */
+        socksreq[len++] = (unsigned char) hostname_len; /* one byte length */
         memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */