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<copyright>Copyright 2007, dslreports.com</copyright>
<pubDate>Sat, 28 Nov 2009 23:49:36 EDT</pubDate>
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<title>multiple ipv6 addresses on one interface</title>
<link>http://www.dslreports.com/forum/remark,23220666</link>
<description><![CDATA[As oppose to ipv4, it seems that a single physical (or virtual) interface can have multiple ipv6 addresses assigned to it. Since we are multi-homed in a way that we have an internal link to our remote sites and we have an "ISP" link to the world, I am wondering how this thing will work. In other words, how the the router or host will know which ipv6 address source to use when sending packets to destination.
In my case let's say I have an interface with 3 ipv6 addresses assigned to it, one link local and two global unicast. My machine(the source) want to send packets to a destination that is not on the same subnet of any of my ipv6 configured addresses. So first hop is the router which will forward the packets according to its routing table. Now the packets will certainly find their way towards destination via whatever route is configured but what about the return packets? . Receiving data on a different link than the sending link will not be allowed on the firewall. 

How do I get control of which ipv6 address I use as a source when I send packets?]]></description>
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<pubDate>2009-10-21 18:38:11</pubDate>
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