Provided by: iproute2_5.2.0-1ubuntu2_amd64 bug


       vlan - vlan manipulation module


       tc ... action vlan { pop | PUSH | MODIFY } [ CONTROL ]

       PUSH := push [ protocol VLANPROTO ]  [ priority VLANPRIO ] id VLANID

       MODIFY := modify [ protocol VLANPROTO ]  [ priority VLANPRIO ] id VLANID

       CONTROL := { reclassify | pipe | drop | continue | pass | goto chain CHAIN_INDEX }


       The  vlan  action  allows to perform 802.1Q en- or decapsulation on a packet, reflected by
       the operation modes POP, PUSH  and  MODIFY.   The  POP  mode  is  simple,  as  no  further
       information  is  required  to  just  drop  the outer-most VLAN encapsulation. The PUSH and
       MODIFY modes require at least a VLANID and allow to optionally  choose  the  VLANPROTO  to


       pop    Decapsulation mode, no further arguments allowed.

       push   Encapsulation mode. Requires at least id option.

       modify Replace mode. Existing 802.1Q tag is replaced. Requires at least id option.

       id VLANID
              Specify  the VLAN ID to encapsulate into.  VLANID is an unsigned 16bit integer, the
              format  is  detected  automatically  (e.g.  prefix  with   '0x'   for   hexadecimal
              interpretation, etc.).

       protocol VLANPROTO
              Choose  the  VLAN  protocol to use. At the time of writing, the kernel accepts only
              802.1Q or 802.1ad.

       priority VLANPRIO
              Choose the VLAN priority to use. Decimal number in range of 0-7.

              How to continue after executing this action.

                     Restarts classification by jumping back to the first filter attached to this
                     action's parent.

              pipe   Continue with the next action, this is the default.

              drop   Packet will be dropped without running further actions.

                     Continue classification with next filter in line.

              pass   Return  to calling qdisc for packet processing. This ends the classification


       The following example encapsulates incoming ICMP packets on eth0 from  into  VLAN
       ID 123:

              #tc qdisc add dev eth0 handle ffff: ingress
              #tc filter add dev eth0 parent ffff: pref 11 protocol ip \
                   u32 match ip protocol 1 0xff flowid 1:1 \
                       match ip src flowid 1:1 \
                   action vlan push id 123

       Here is an example of the pop function: Incoming VLAN packets on eth0 are decapsulated and
       the classification process then restarted for the plain packet:

              #tc qdisc add dev eth0 handle ffff: ingress
              #tc filter add dev $ETH parent ffff: pref 1 protocol 802.1Q \
                   u32 match u32 0 0 flowid 1:1 \
                   action vlan pop reclassify