All,
Interesting situation. My server 6.5.3 has the onboard NIC and a two port NIC. When adding a VM to BR0, tied to the onboard/management network, everything is good. I want to place some VMs on my second NIC (ETH1) and bridge that to a different VLAN on my switch. I have no IP address on ETH1, only a bridge (BR1) configuration. The VMs can't talk out to my switch. Wireshark shows that the VM is receiving frames from my switch (EIGRP hellos, BPDUs, etc) but nothing back. See below for troubleshooting steps taken:
1. Validated inbound traffic from switch with wireshark on VM
2. Validated network card in separate computer (OK)
3. Moved network card to different PCIe slot
4. Validated cable and physical port/configuration on switch to separate machine (OK)
5. Validated wireshark in one VM can see frames from another VM spun up on BR1
At this point, it appears that frames sent out from the VM make it on the bridged virtual LAN inside the server, but don't transmit out the NIC. Any troubleshooting I can do internally from here? I must be missing something simple. Any help appreciated.