Options table in database is showing blog_id as 0 for both

Hello

I’m playing around with multisite and have just added a new site and have noticed that in wp_options table and in wp_2_options table for blog_id both are just showing 0.

In the wp_blogs table it has given each site a different id (1 and 2)

any ideas why the blog_id’s aren’t showing correctly in these tables

thanks in advance