[Ns-bugs] [Bug 188] global routing does not handle ip aliasing

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=188





------- Comment #8 from craigdo at ee.washington.edu  2008-06-10 11:39 -------
Comment from Tom:

I can tell you from experience that it is tricky to get multiple 
addresses from different subnets on the same interface to work right on 
a Linux box; for instance, source address selection is non-deterministic 
and you can end up with mismatched source addresses.

However, I do not think this is a big simulation use case and I think 
that, more often than not, this will really be indicative of a 
programming error.

I do think we need to support multiple IP addresses per interface but 
mainly when we get to IPv6 where that is the norm.

Note:  this is somewhat related to bug 85, where we have ifIndexes at 
different levels of the system; ip aliaising will definitely break the 
alignment of IPv4Interface index to NetDevice index even if we tried to 
align otherwise.


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