Wp-admin using wrong url's for pagination

[melkdesk]

I am using the following setup:
Nginx -> varnish -> wordpress/apache

functions.php:
update_option('siteurl' and update_option('home' are correct.

wp-config.php:
define('WP_HOME' and define('WP_SITEURL' are correct.

Frond end of the site works fine, backend works fine, BUT when i want to use the backend pagination to go to page 2 of posts, the url points to the ip of the server, thus invalidating my admin cookie.

( ​http://???.??.??.??/wp-admin/edit.php?paged=2 ,this should be ​http://site_url/wp-admin/edit.php?paged=2 ) ..

I'm able to replicate this issue with a clean wp using the same setup.

[kurtpayne]

Can you provide a dump of $_SERVER and apache_request_headers()?

What version of WordPress are you using?

Are you using mod_php, cgi, suphp, fastcgi, or something else?

Related #18944

[ocean90]

#18944