> Yes, IPMP is IP Multipathing. Even if you have multiple addresses on
> the same subnet on different interfaces, as you do, it does not
> automatically enable IPMP.
Though the resulting configuration is unsupported and broken. That
is, if you have multiple IP interfaces on the same link, they *must*
be configured into an IPMP group. If you don't do this, you will see
duplicate broadcast and multicast traffic, among other problems.
> And I still get confused by that selection.... Back with interface
> groups (pre IPMP), outbound traffic on would leave on the same
> interface a connection came in on, but I'm not sure that is still the
With IPMP, outbound interface selection is determined in a round-robin
fashion the first time an application attempts to send to a particular
destination that does not yet have an IRE cache entry.
See illgrp_scheduler() for details.
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