tc-route(8) - phpMan

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Route classifier in tc(8)            Linux           Route classifier in tc(8)

       route - route traffic control filter

       tc  filter ... route [ from REALM | fromif TAG ] [ to REALM ] [ classid CLASSID ] [
               action ACTION_SPEC ]

       Match packets based on routing table entries. This filter centers around the possi-
       bility  to assign a realm to routing table entries. For any packet to be classified
       by this filter, a routing table lookup is performed and the returned realm is  used
       to decide on whether the packet is a match or not.

       action ACTION_SPEC
              Apply an action from the generic actions framework on matching packets.

       classid CLASSID
              Push matching packets into the class identified by CLASSID.

       from REALM
              fromif  TAG  Perform  source route lookups.  TAG is the name of an interface
              which must be present on the system at the time of tc invocation.

       to REALM
              Match if normal (i.e., destination) routing returns the given REALM.

       Consider the subnet being attached to eth0:

              ip route add dev eth0 realm 2

       The following route filter will then match packets from that subnet:

              tc filter add ... route from 2 classid 1:2

       and pass packets on to class 1:2.

       Due to implementation details, realm values must be in  a  range  from  0  to  255,
       inclusive.  Alternatively, a verbose name defined in /etc/iproute2/rt_realms may be
       given instead.

       tc(8), ip-route(8)

iproute2                          21 Oct 2015        Route classifier in tc(8)

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