I have several TP machines hosting VMs.
These machines have only one network card and use the native network connection for their operation.
On the other hand, the VM that each of the physical machines hosts is connected via a bridge to a VLAN 11 subnet
The VMs must therefore operate on VLAN 11.
When I do a tcpdump on the VM and on the bridge I can see for example its DHCP requests but my requests are not visible on the VLAN11 interface.
I do not see where to look.
ifcfg-Connexion_pont_1
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STP=no
TYPE=Bridge
PROXY_METHOD=none
BROWSER_ONLY=no
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_PRIVACY=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=netplan-br_vlan11
UUID=3e575491-bd47-427d-b378-9bff84f2f171
DEVICE=br_vlan11
ONBOOT=yes
BOOTPROTO=autoip
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TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=no
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME=netplan-enp0s31f6
UUID=8f70a841-880c-41c1-8613-9b59b7a03cdb
DEVICE=enp0s31f6
ONBOOT=yes
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VLAN=yes
TYPE=Vlan
PHYSDEV=enp0s31f6
VLAN_ID=11
REORDER_HDR=yes
GVRP=no
MVRP=no
HWADDR=
NAME="vlan11 1"
UUID=d1f083ce-2833-4539-aee7-40b3598c13ea
DEVICE=vlan11
ONBOOT=yes
BRIDGE=br_vlan11