[ds6] Info on address notation

[Stefano Guandalini]

Sorry if my question is very simple but I am a newby.

I'm taking a look to linux include files to start developing an app that 
supports ipv6. It's a daemon that have to talk to some terminals that check 
entrance in buildings.

I have some doubts with the string notation of addresses; counting the maximum 
lenght that an ipv6 address can be, I think I need a 39 characters string but 
in /usr/include/netinet/in.h I see:

#define INET_ADDRSTRLEN 16
#define INET6_ADDRSTRLEN 46

I suppose that the second value is to declare a char[].

Am I right?
Why 46 chars?

Thank you.

-- 
Stefano Guandalini
the mobile guandalf
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