Yep, I see a VLAN tag.
Here's the trace of an example ping:
From the source VM (VLAN configured in guest OS, VLAN not on NIC, VLAN aware not enabled on host):
Out 1e:5b:03:0a:30:26 ethertype 802.1Q (0x8100), length 124: vlan 951, p 0, ethertype IPv6, fc00:b6d:cfc:951::6 >...