ACX5448/ACX710 forwards transit packets tagged with native vlan id.
On lag sub interfaces configured with vlan matching the native vlan id, the packets were egressed out with native vlan-id.
This issue will be seen only for transit traffic and L3 lag interfaces.
The peer device will expect an untagged packet and the packets received with vlan tag will be dropped.
PR#1849241 will address this issue.