Server 2008 R2 SP1 with RRAS takes down entire network

We have a Hyper-V server (2008 R2 SP1) that is running several DC's.  These DC's are for different domains and establish outbound VPN connections using RRAS to sync with remote DC's.  We have a few of this with 20-30 DC's running on each Hyper-V
server.
Application of SP1 to the host OS went without issue and everything remained normal.
Upgraded a single Hyper-V VM from 2008 R2 to 2008 R2 SP1 and everything connected to the physical switch went down.  Ping times went through the roof and timeouts were happening on the local physical network.  All Hyper-V guests on all
Hyper-V machines had CPU usage that went from about 0% up to averaging 5% to 7%.  The processing taking all the CPU was the LocalServiceNoNetwork one which is related to packet inspection.
Using the process of elimination, we found that if we stopped RRAS on the Hyper-V guest running 2008 R2 SP1 then everything went back to normal.  We duplicated the same scenario with a different machine...and again, just stopping RRAS fixed everything.
 As soon as RRAS starts, the network crashes.
Has anyone else seen anything like this?  I plan on opening a case with PSS tomorrow but thought I'd ask.
Rob
Rob

PSS is useless.  They work on the ticket when convenient for their overseas hours and have no idea what is wrong.  They keep asking for the same information over and over.  We've decided to remove the RRAS component from our VM's.  Instead
we've decided to set up a VPN configuration where we use IPSec tunnels for each VM.  This allows us to remove all the RRAS roles and the issue goes away with SP1 applied.
There is definitely something wrong with SP1, RRAS and Hyper-V.  Maybe Microsoft can figure it out on their own time.  It is easier and simpler for us to just remove the component.
For historical reference, the issue seems to be that RRAS with SP1 picks up packets that are not destined for the RRAS tunnel and attempts to retransmit them.  This, in turn, saturates the switches with retransmit packets and takes down the entire network.
Microsoft has absolutely no clue on how to resolve the issue and the techs have so little knowledge in real networking troubleshooting that it is laughable.
Rob

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    fffff880`0bf71840 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : termdd!IcaDeviceControlStack+0x827
    STACK_COMMAND:  kb
    FOLLOWUP_IP:
    RDPWD!memcpy+1d9
    fffff880`0576f0c9 668901          mov     word ptr [rcx],ax
    SYMBOL_STACK_INDEX:  3
    SYMBOL_NAME:  RDPWD!memcpy+1d9
    FOLLOWUP_NAME:  MachineOwner
    MODULE_NAME: RDPWD
    IMAGE_NAME:  RDPWD.SYS
    DEBUG_FLR_IMAGE_TIMESTAMP:  4ce7ab45
    FAILURE_BUCKET_ID:  X64_0x50_VRF_RDPWD!memcpy+1d9
    BUCKET_ID:  X64_0x50_VRF_RDPWD!memcpy+1d9
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    - Check to see if there was anything specific that happened on the day that the crashes started.  There were about 5 new poeple introduced to the RDS Farm at that time, but there were using (a) client machines that had been used previously elsewhere with
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    - Updated Windows Server 2008 R2 SP1 to the latest patches (as of Feb 2012).
    - Turned on Verifier (using recommended settings), and then analysed dump-files with the same reference to rdpwd.sys.
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    - Ran MEMTEST on a VM Guest with the full 8Gb RAM, on a couple of the ESX Hosts.
    - Changed the VMTools Video Driver to the SVGA II driver from the Standard VGA Driver.
    - Ran a full AV Scan (using SEP).
    - Isolated the Printer Drivers using the Printer Management MMC.
    - Ran sfc /scannow of all RDS Servers and rebooted.
    The mini-dump file mentioned above is here:https://skydrive.live.com/redir.aspx?cid=48f471f287af2349&resid=48F471F287AF2349!105&parid=48F471F287AF2349!103
    I hope someone can help, as what hair I have left (from pulling it out) is turning grey!
    Andy

    *                        Bugcheck Analysis                                   
    PAGE_FAULT_IN_NONPAGED_AREA (50)
    Invalid system memory was referenced.  This cannot be protected by try-except,
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    Arg1: fffffa800c153284, memory referenced.
    Arg2: 0000000000000001, value 0 = read operation, 1 = write operation.
    Arg3: fffff880053dc0c9, If non-zero, the instruction address which referenced the bad memory
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    Arg4: 0000000000000000, (reserved)
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    Could not read faulting driver name
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    RDPWD!memcpy+1d9
    fffff880`053dc0c9 668901          mov     word ptr [rcx],ax
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    CUSTOMER_CRASH_COUNT:  1
    DEFAULT_BUCKET_ID:  VERIFIER_ENABLED_VISTA_MINIDUMP
    BUGCHECK_STR:  0x50
    PROCESS_NAME:  svchost.exe
    CURRENT_IRQL:  0
    TRAP_FRAME:  fffff8800aa48a80 -- (.trap 0xfffff8800aa48a80)
    NOTE: The trap frame does not contain all registers.
    Some register values may be zeroed or incorrect.
    rax=00000000000001ff rbx=0000000000000000 rcx=fffffa800c153284
    rdx=ffffffffffee6b8b rsi=0000000000000000 rdi=0000000000000000
    rip=fffff880053dc0c9 rsp=fffff8800aa48c18 rbp=0000000000000001
     r8=000000000000001c  r9=fffff8a0123923a8 r10=fffff8a0123923a8
    r11=fffffa800c153268 r12=0000000000000000 r13=0000000000000000
    r14=0000000000000000 r15=0000000000000000
    iopl=0         nv up ei pl nz na pe nc
    RDPWD!memcpy+0x1d9:
    fffff880`053dc0c9 668901          mov     word ptr [rcx],ax ds:8c40:fffffa80`0c153284=????
    Resetting default scope
    LAST_CONTROL_TRANSFER:  from fffff800016469fc to fffff8000169ac40
    STACK_TEXT:  
    fffff880`0aa48918 fffff800`016469fc : 00000000`00000050 fffffa80`0c153284 00000000`00000001 fffff880`0aa48a80 : nt!KeBugCheckEx
    fffff880`0aa48920 fffff800`01698d6e : 00000000`00000001 fffffa80`0c153284 00000000`00000000 fffff8a0`10919830 : nt! ?? ::FNODOBFM::`string'+0x4611f
    fffff880`0aa48a80 fffff880`053dc0c9 : fffff880`053c17cf 00000000`00000000 00000000`00000022 00000000`00000002 : nt!KiPageFault+0x16e
    fffff880`0aa48c18 fffff880`053c17cf : 00000000`00000000 00000000`00000022 00000000`00000002 fffff880`053d999d : RDPWD!memcpy+0x1d9
    fffff880`0aa48c20 fffff880`053d99fc : fffff8a0`10cf30d0 00000000`00000022 00000000`00000019 00000000`00000002 : RDPWD!SM_MCSSendDataCallback+0x303
    fffff880`0aa48c60 fffff880`053d8354 : fffff880`0aa48da0 fffff8a0`123923a8 00000000`00000000 fffff880`053d7bfd : RDPWD!HandleAllSendDataPDUs+0x188
    fffff880`0aa48d10 fffff880`053d7f64 : 00000000`00000031 fffffa80`0c039de5 00000006`0000001f fffff880`053a6079 : RDPWD!RecognizeMCSFrame+0x28
    fffff880`0aa48d50 fffff880`012c01f8 : fffff8a0`12393000 fffffa80`0bb7aa60 fffffa80`0b81e9c0 fffff880`053a4e00 : RDPWD!MCSIcaRawInputWorker+0x3d4
    fffff880`0aa48df0 fffff880`053a48d0 : 00000000`00000000 fffff880`0aa48f10 fffff880`0aa48f08 fffffa80`0c039ba8 : termdd!IcaRawInput+0x50
    fffff880`0aa48e20 fffff880`053a3d85 : fffff880`01716890 fffffa80`0c0327e8 00000000`00000000 00000000`00000000 : tssecsrv!CRawInputDM::PassDataToServer+0x2c
    fffff880`0aa48e50 fffff880`053a37c2 : fffffa80`0c16e598 fffffa80`00000000 00000000`00000031 fffff800`00000000 : tssecsrv!CFilter::FilterIncomingData+0xc9
    fffff880`0aa48ef0 fffff880`012c01f8 : fffff880`009b8180 00000000`00000001 00000000`00000000 00000000`00000000 : tssecsrv!ScrRawInput+0x82
    fffff880`0aa48f60 fffff880`052994c5 : fffffa80`0c16e580 fffffa80`0c039ba8 00000000`00000000 fffffa80`0c16e580 : termdd!IcaRawInput+0x50
    fffff880`0aa48f90 fffff880`012c0f3e : fffffa80`0c039b70 fffffa80`0acccf20 fffffa80`0a95c450 fffffa80`0abf9620 : tdtcp!TdInputThread+0x465
    fffff880`0aa49810 fffff880`012bfae3 : fffffa80`0c0a6560 fffffa80`0abf9620 fffffa80`087eee80 fffffa80`0a95c450 : termdd!IcaDriverThread+0x5a
    fffff880`0aa49840 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : termdd!IcaDeviceControlStack+0x827
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    FOLLOWUP_IP:
    RDPWD!memcpy+1d9
    fffff880`053dc0c9 668901          mov     word ptr [rcx],ax
    SYMBOL_STACK_INDEX:  3
    SYMBOL_NAME:  RDPWD!memcpy+1d9
    FOLLOWUP_NAME:  MachineOwner
    MODULE_NAME: RDPWD
    IMAGE_NAME:  RDPWD.SYS
    DEBUG_FLR_IMAGE_TIMESTAMP:  4ce7ab45
    FAILURE_BUCKET_ID:  X64_0x50_VRF_RDPWD!memcpy+1d9
    BUCKET_ID:  X64_0x50_VRF_RDPWD!memcpy+1d9
    Followup: MachineOwner
    Bug Check Code 0x50:http://msdn.microsoft.com/en-us/library/windows/hardware/ff559023%28v=vs.85%29.aspx
    Please start by that:
    Update all possible drivers
    Uninstall all unused programs
    Disable all security softwares you have
    Run chkdsk /r /f and sfc /scannow
    Run memtest86+ to check if all is okay with your RAM. If an error was detected then replace the faulty RAM or contact your manufacturer Technical Support
    If this does not help then upload MEMORY.DMP file (You can zip it and divide it using 7-ZIP) using Microsoft Skydrive and post a link here.
    You can also contact Microsoft CSS for assistance.
    This
    posting is provided "AS IS" with no warranties or guarantees , and confers no rights.   
    Microsoft
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    Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration
    Microsoft
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