Access Port VLAN with Trunked Uplink

We have some (mellanox) edgecore 2410 switches with cumulus Linux installed.

We have a bond (lacp) from the external network, presenting 4 vlans to the switch to 2x1gb ports.

We can connect wireshark to one of the 2 bonded ports on the 2410 switches to witness that the required vlans are presented.

In some guides, there are references to files in sysctl.d and proc that refer to files around vlans, none of these specific files exist (I don't know if this is relevant).

We've followed the various notes around vlan tagging of access ports, as yet we're unsuccessful in making it work, is there anything obvious we're missing?

I've attached the interfaces file.

cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*.intf

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0
address xx.xx.xx.xx/24
gateway xx.xx.xx.xx

auto swp1
iface swp1
bridge-access 240

auto swp2
iface swp2
bridge-access 241

auto swp3
iface swp3
bridge-access 242

auto swp4
iface swp4
bridge-access 246

auto swp47
iface swp47

auto swp48
iface swp48

auto swp49
iface swp49

auto swp50
iface swp50

auto swp51
iface swp51

auto swp52
iface swp52

auto bond1
iface bond1
bond-slaves swp47 swp48

auto bridge
iface bridge
bridge-ports swp1 swp2 swp3 swp4 bond1
bridge-pvid 1
bridge-vids 240-242 246
bridge-vlan-aware yes

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