[Xen-users] Windows HVM network issue

[james@xxxxxxxxxxx]

I've built a windows2008r2 instance, and it runs fine, however the outside
world cannot reach it.  If I go into the vm using VNC, I can ping from
the domU to the dom0 or to the broader Internet.  However, from the dom0 a ping 
to the domU fails.
And thus RDP fails as well, leaving a lonely VM.

(other machines on this dom0, and other HVM machines, seem to work fine.

This is Xen 4 on Debian Jessie.  The Windows system seems to be fine from the 
inside.

Anyone have an idea where to look?

- - - - - - - - - - -
dom0 bridge setup:

bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.a4badb31e095       no              eth0
                                                        vif1.0
                                                        vif2.0
                                                        vif3.0
                                                        vif6.0
                                                        vif6.0-emu
                                                        vif7.0

- - - - - - - - -
domU config:
builder='hvm'
memory = 2048
vcpus=2
name = "w2008b"
vif = ['mac=00:50:56:00:31:22,bridge=xenbr0,type=ioemu']
disk = ['phy:/dev/vg1/w2008a-disk,hda,w'
      ]
boot="dc"
serial='pty'
vnc=1
vnclisten="0.0.0.0"
vncpasswd="foobar"

(i added the type=ioemu, but it didn't make a difference)

- - - - - - - - -
itguy@fshost:/etc/xen$ sudo xl info 5
host                   : fshost
release                : 3.16-2-amd64
version                : #1 SMP Debian 3.16.3-2 (2014-09-20)
machine                : x86_64
nr_cpus                : 16
max_cpu_id             : 31
nr_nodes               : 2
cores_per_socket       : 4
threads_per_core       : 2
cpu_mhz                : 2261
hw_caps                : 
bfebfbff:28100800:00000000:00003b00:009ce3bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 6134
free_memory            : 919
sharing_freed_memory   : 0
sharing_used_memory    : 0
outstanding_claims     : 0
free_cpus              : 0
xen_major              : 4
xen_minor              : 4
xen_extra              : .1
xen_version            : 4.4.1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 
hvm-3.0-x86_32p hvm-3.0-x86_64 
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : 
xen_commandline        : placeholder dom0_mem=512M
cc_compiler            : gcc (Debian 4.9.1-15) 4.9.1
cc_compile_by          : waldi

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