[Xen-users] tcpdump

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

Hi Everyone,

I'm using bridges with my Xen setup. I have one HVM guest (running 
pfsense), and one Ubuntu PV Guest. The Ubuntu guest passes all its 
traffic via the bridge on the Dom0, then out via the HVM pfsense 
firewall (which in turn has real PCI NICs passed through to it).
When I run tcpdump on the Dom0, if I specify the vif which is related to 
the Ubuntu guest (e.g. vif2.0), I can see traffic passing through the 
interface. However, when I run tcpdump with the interface of the pfsense 
guest, I don't see any traffic. Why is this? Does it have something to 
do with the fact that the guest is HVM?
I'm just trying to get an understanding of Xen networking, so any help 
is appreciated.
Thanks

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