In Equinix Metal, users can provision their own private VLANs to segregate traffic. VLANs can either be assigned to a bond (all interfaces for a server in bonded mode) or specifically to a single interface in unbonded mode. The same VLAN (currently) cannot be assigned to more than one interface in an unbonded configuration. For this reason unbonded mode is not recommended for environments that need NIC/switch-level redundant availability.