diff --git a/src/Composer/Repository/PlatformRepository.php b/src/Composer/Repository/PlatformRepository.php
index d5e7e583c..8e711b30f 100644
--- a/src/Composer/Repository/PlatformRepository.php
+++ b/src/Composer/Repository/PlatformRepository.php
@@ -77,14 +77,29 @@ class PlatformRepository extends ArrayRepository
             $version = $versionParser->normalize($prettyVersion);
         }
 
+        // The AF_INET6 constant is only defined if ext-sockets is available but IPv6 support might still be available.
+        $ipv6Support = defined('AF_INET6') || @inet_pton('::') !== false;
+
         $php = new CompletePackage('php', $version, $prettyVersion);
         $php->setDescription('The PHP interpreter');
         $this->addPackage($php);
 
+        if ($ipv6Support) {
+            $phpIpv6 = new CompletePackage('php-ipv6', $version, $prettyVersion);
+            $phpIpv6->setDescription('The PHP interpreter with IPv6 support');
+            $this->addPackage($phpIpv6);
+        }
+
         if (PHP_INT_SIZE === 8) {
             $php64 = new CompletePackage('php-64bit', $version, $prettyVersion);
             $php64->setDescription('The PHP interpreter, 64bit');
             $this->addPackage($php64);
+
+            if ($ipv6Support) {
+                $php64Ipv6 = new CompletePackage('php-64bit-ipv6', $version, $prettyVersion);
+                $php64Ipv6->setDescription('The PHP interpreter with IPV6 support, 64bit');
+                $this->addPackage($php64Ipv6);
+            }
         }
 
         $loadedExtensions = get_loaded_extensions();