The opposite situation is also true. I tried out IPv6, but my first server definition did only use IPv4, making the later IPv6 enabled server definition fail to bind.

2009/09/27 09:12:41 [emerg] 30088#0: bind() to [::]:80 failed (98: Address already in use)
2009/09/27 09:12:41 [notice] 30088#0: try again to bind() after 500ms

Now after reading this posting, realizing I must enable it for all vhosts, but I really think this is an issue in need of at least documentation. Maybe I should add it to the English wiki.

Thank you for an excellent software Igor.
-- Kuisma