Hi all,
we have a scenario with a system that produce packets with double tag 802.1Q, can't communicate in egress direction.
The chain is: metroETH-->proxmox hv-->virtual router
In this direction we view the packet with double tag correctly, in normal way, we have a phisical interface enp3s0f1 attached on a vmbr5 with VLAN Aware, and the virtual router have a ether2 attached on vmbr5.
In this case, if we trace, in the pcap file, the packet is correctly double tagged in ingress.
The virtual router have a pppoe server on the INNER VLAN of the VLAN Stacking 802.1Q and respond correctly with a packet double tagged.
I take a tcpdump on the phisical interface of the node, the enp3s0f1, and we view packet with double tag 802.1Q in respond to the discovery received from a pppoe client.
Here is the problem, if i trace on port of MetroETH Switch, rx direction, the packet are single tagged, with only the inner VLAN.
The egress of the phisical port of proxmox node, seems to drop the first packet, despite the tcpdump pcap trace have the packets with double tag?
On the MetroETH switch we have other port with the same configuratione attached on other router with no problem.
Why on the ingress towards is all OK and in egress the outer VLAN disappear?
Thanks to anyone who can answer us.
Proxmox 8.2.7
we have a scenario with a system that produce packets with double tag 802.1Q, can't communicate in egress direction.
The chain is: metroETH-->proxmox hv-->virtual router
In this direction we view the packet with double tag correctly, in normal way, we have a phisical interface enp3s0f1 attached on a vmbr5 with VLAN Aware, and the virtual router have a ether2 attached on vmbr5.
In this case, if we trace, in the pcap file, the packet is correctly double tagged in ingress.
The virtual router have a pppoe server on the INNER VLAN of the VLAN Stacking 802.1Q and respond correctly with a packet double tagged.
I take a tcpdump on the phisical interface of the node, the enp3s0f1, and we view packet with double tag 802.1Q in respond to the discovery received from a pppoe client.
Here is the problem, if i trace on port of MetroETH Switch, rx direction, the packet are single tagged, with only the inner VLAN.
The egress of the phisical port of proxmox node, seems to drop the first packet, despite the tcpdump pcap trace have the packets with double tag?
On the MetroETH switch we have other port with the same configuratione attached on other router with no problem.
Why on the ingress towards is all OK and in egress the outer VLAN disappear?
Thanks to anyone who can answer us.
Proxmox 8.2.7
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