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    SubjectRe: ioctl SIOCGIFNETMASK: ip alias bug 2.4.9 and 2.2.19 (Matthias Andree)  wrote on 06.09.01 in <>:

    > Well, Postfix used to look at the addresses and deduce the network class
    > for that,

    The WHAT?!

    Classes have been dead since around 1993!

    > but there have been many complaints by people that this would
    > get subnets wrong. A couple of months ago, Postfix has started to look
    > up the netmasks as well.

    Modern software trying to work with classes should not allowed on the
    Internet; people who don't know this should not allowed to write network

    MfG Kai
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