Bug #55508 was fixed in 5.5.19 with 15ba757, not in 5.5.18

See #631 (comment)

Author: kaplanlior

NEWS

@@ -237,6 +237,10 @@ PHP                                                                        NEWS
   . Fixed bug #68283 (fileinfo: out-of-bounds read in elf note headers).
     (CVE-2014-3710) (Remi)
 
+- FPM:
+  . Implemented FR #55508 (listen and listen.allowed_clients should take IPv6
+    addresses). (Robin Gloster)
+
 - GD:
   . Fixed bug #65171 (imagescale() fails without height param). (Remi)
 
@@ -278,8 +282,6 @@ PHP                                                                        NEWS
 - FPM:
   . Fixed bug #65641 (PHP-FPM incorrectly defines the SCRIPT_NAME variable
     when using Apache, mod_proxy-fcgi and ProxyPass). (Remi)
-  . Implemented FR #55508 (listen and listen.allowed_clients should take IPv6
-    addresses). (Robin Gloster)
 
 - OpenSSL:
   . Revert regression introduced by fix of bug #41631