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



NAME
       route - route traffic control filter

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

DESCRIPTION
       Match packets based on routing table entries. This filter centers
       around the possibility 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.

OPTIONS
       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.

EXAMPLES
       Consider the subnet 192.168.2.0/24 being attached to eth0:

              ip route add 192.168.2.0/24 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.

NOTES
       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.

SEE ALSO
       tc(8), ip-route(8)

iproute2                          21 Oct 2015        Route classifier in tc(8)