About "sockaddr_in" and "sockaddr_in6" structures

[Juan Francisco Rodriguez Hervella]

Hello:

I'm seeing that "struct sockaddr_in" has a field like this:

char sin_zero[8];

Why ?
Could anyone explain me what's used for ?

Could it be bad if I'd add the same field to
"sockaddr_in6" ?

PS: I'm trying to implement divert sockets for
IPv6 using the KAME implementation of "ip6fw".

Thanks.

JFRH.


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