I’m running vEOS (4.17.0F) in a KVM hypervisor along with an instance of Cumulus VX 3.0.1. I’m attempting to bring up a simple BGP session between the devices through a virbr virtual network, but AFACT the vEOS instance is failing to ack any SYN packets to TCP/179 coming from the Cumulus instance; every 30 seconds the vEOS instance sends a SYN to TCP/179 to the Cumulus instance, which then sends a SYNACK back…which vEOS doesn’t acknowledge either.
I’m not seeing any oddities WRT the BGP configs or basic reachability (the fact that I do see SYNs going in both directions gives me confidence I’m not doing anything wrong here).
vEOS BGP config looks like so (10.0.0.0 is another vEOS, 10.24.0.0 is the Cumulus device)
router bgp 4200000101
The quagga config on the Cumulus device looks like so:
router bgp 4200000003
PCAP of the resulting BGP SYN (and occasional SYNACK) is attached. Has anyone run into anything similar here?
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