Virtual machines cannot communicate over network bridges
Issue
- KVM or RHEV virtual machines cannot communicate over network bridges
- We have two RHEL6.5 hosts with a KVM guest on each. The second NIC with addresses in the
192.168.1.x
IP range. The host machines have a bridge interface also in this range. The guests use a NIC configured to use the bridge as source and model isvirtio
. The KVM guests cannot ping each other, but can ping the host on which they reside only. The hosts can ping all four addresses: the two hosts and the two KVM guests. - When we startup service
avahi-daemon
on the RHEL guest, after a while when we ping the ip address of the guest, we will meet the data lost issue. - When our Windows VMs start IP Multicast, they become unreachable on the network.
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 6
- KVM or RHV/RHEV virtualization
- Linux
bridge
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