On activation it gives me "undefined index: host on line 1607.
(Amazon EC2 - out of the box Bitnami Image with Multisite turned on)
Bit hard doing this with vi but its the menu_page_url on line 1301
When doing "network activate"...
So the Method "admin_url" handles it correct.
But the method "state" assumes if ( isset( $_parent_pages['jetpack'] ) )
menu_page_url should find an index 'jetpack' in $_parent_pages during site administration.