IM driver and loopback

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Hi,
I have passthru-based IM driver.
I'd like to receive packet which is send inside MPSend() like loopback-ed
with PtReceive().
In WinDbg I am seeing that currently sending packet has Flags == 0x82
I tried to remove 0x80 (NDIS_FLAGS_DONT_LOOPBACK) and I add
0x200 (NDIS_FLAGS_LOOPBACK_ONLY).
In PtReceive() I am seeing that packet is really received, but it seems
that packet is not accepted by protocol for some reason,
because I see no received packets in Network Monitor.

Is flags handling described above sufficient to loopback sent packet,
or is there needed some other additional work ?

Peter
.

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