Re: WG Review: Multiple InterFaces (mif)

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Christian Vogt wrote:

The second topic talks about a problem of applications:  When initiating
a connection, which pair of source and destination address (and
consequently which pair of interfaces) should be used?  Again, this
issue may come up independently of whether a host has one or multiple
interfaces -- though the presence of multiple interfaces makes the issue
more difficult to tackle and, since it determines which interface pair
is used, also more important.
This topic, address selection, is not currently handled by applications. In many cases, it is handled entirely by the stack (through ordering of the destination ddresses in DNS replies and source address selection in the IP stack), and in other cases the application chooses a destination address with the stack choosing a source address. There are certain cases (sometimes in solutions to the problems that we are discussing here) where applications do choose both the destination and sourece address, but they are not common.

Margaret
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