Messages in this thread |  | | Subject | Re: notion of a local address [was: Re: ioctl SIOCGIFNETMASK: ip alias | Date | Thu, 6 Sep 2001 18:01:01 +0100 (BST) | From | Alan Cox <> |
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> That is not practical. Surely there is an API to find out if an IP > address connects to the machine itself. If every UNIX system on > this planet can do it, then surely Linux can do it.
There are a very large number of networking configurations that Unix (here meaning 4.*BSD networking or its various stream hacked abuses) cannot handle.
How for example do you propose to answer the question for the case Q: "is this local" A: "it depends on the sender"
With netfilter and transparent proxying active this is entirely possible
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