Why is ::1 Returned as the IP Address in MAMP Localhost on Snow Leopard?

MAMP on Localhost: IP Address as ::1

In MAMP environments on Snow Leopard, users may encounter the IP address ::1 being returned when retrieving a user's IP via localhost. This unusual behavior raises the question of whether it is the intended outcome.

To address this concern, a solution was discovered in a comment by @Brad:

Solution:

1. Open the Apache configuration file /etc/apache2/httpd.conf as root using the command:

   sudo vi /etc/apache2/httpd.conf

2. Locate the "Listen" directive and modify it to specify the IP address and port explicitly. For example, change:

   Listen 80

   to:

   Listen 127.0.0.1:80

3. Save the changes and restart Apache.

After implementing this solution, the $_SERVER['REMOTE_ADDR'] variable will display the desired IP address 127.0.0.1 instead of ::1.

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