[ovirt-users] Cann't ping guest from outside

I am testing ovirth, my test environment are: Host: nested virtualization ESXi5.5+CentOS 6.4_x86_64 Guest: Ubuntu14.04_i386 Now, ping CentOS <-> guest and outside are OK Outside <-> gest Fail I am using bridge connection, I try to tcpdump [root@centos vdsm]# brctl show bridge name bridge id STP enabled interfaces ;vdsmdummy; 8000.000000000000 no rhevm 8000.005056ae45e5 no eth0 vnet0 [root@centos vdsm]# brctl showmacs rhevm port no mac addr is local? ageing timer 2 fe:1a:4a:0c:14:41 yes 0.00 [root@centos vdsm]# ifconfig|grep HWaddr eth0 Link encap:Ethernet HWaddr 00:50:56:AE:45:E5 rhevm Link encap:Ethernet HWaddr 00:50:56:AE:45:E5 vnet0 Link encap:Ethernet HWaddr FE:1A:4A:0C:14:41 [root@centos vdsm]# service iptables stop [root@centos vdsm]# tcpdump 11:34:59.267379 ARP, Request who-has GUESTIP tell OUTSIDEPCIP, length 46 11:34:59.268017 ARP, Reply GUESTIP is-at 00:1a:4a:0c:14:41 (oui Unknown), length 28 I can see only arp working, how do I check this problem? and how vdsm convert from FE:1A:4A:0C:14:41 to guest mac 00:1a:4a:0c:14:41? Thank you! -- Regards, John Xue