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issue regarding ovs br-int

Hello,

I have a multinode set up with openstack and ovs. I am using gre tunneling for communication between vms in different hosts. When I ping vmA in host A from vmB in host B (vmA and vmB are in the same vlan) I get a normal reply. However if i do a tcpdump -n -i br-int in host A i only see the ARP requests but not the icmp ones. If i do tcpdump -n -i qvoda209351-8a (the interface that the vmA connects to) i see everything normally (both arp and icmp). Can someone tell me why this is happening and how can i make the icmp requests to appear also in br-int?

Thank you Anna