Support for hexadecimal or octal ip format for the proxy_pass module

[Dalaih]

Hello,
I'd like the proxy_pass module of nginx to be able to support hexadecimal or
octal ip formats.
For example here are the different versions of the ip of the nginx forum :
IP address: http://174.36.94.16
Hexadecimal: http://0xae245e10
Octal (dotted): http://0256.044.0136.020
Octal (undotted): http://2921618960

As you can see, they all work fine in any "civilized" browsers
(firefox...etc).
Thanks in advance for your help.
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