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We have a web server with 2 NICs; NIC A faces outward toward our load
balancer, and is only intended to carry HTTP traffic. NIC B faces
inward to a network connecting web servers to a DB Server. We use App
Center 2k sp2 for publishing, but don't use NLB - we use an external
load balancer.

In our configuration, the web server has 254 addresses bound to NIC A
(one per web site), and one bound to NIC B. This worked fine under
Win2k.

Under Win2k3, if we bind more than 64 Ip Addresses to board A, we can
no longer invoke locally hosted Com+ objects - Calling create object
on any of them yields a "800ffff Catastrophic Failure". The same
thing happens if you try and manually start the COM+ application from
the Component services MMC Snap-in.

We've tried exluding the board A address from RPC using RPCCFG, and
that didn't seem to help.

Any thoughts on what could be going wrong?