1Route classifier in tc(8)            Linux           Route classifier in tc(8)
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NAME

6       route - route traffic control filter
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SYNOPSIS

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

13       Match packets based on  routing  table  entries.  This  filter  centers
14       around  the possibility to assign a realm to routing table entries. For
15       any packet to be classified by this filter, a routing table  lookup  is
16       performed  and  the  returned  realm  is  used to decide on whether the
17       packet is a match or not.
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OPTIONS

20       action ACTION_SPEC
21              Apply an action from the generic actions framework  on  matching
22              packets.
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24       classid CLASSID
25              Push matching packets into the class identified by CLASSID.
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27       from REALM
28       fromif TAG
29              Perform  source  route lookups.  TAG is the name of an interface
30              which must be present on the system at the time  of  tc  invoca‐
31              tion.
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33       to REALM
34              Match  if  normal  (i.e., destination) routing returns the given
35              REALM.
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EXAMPLES

38       Consider the subnet 192.168.2.0/24 being attached to eth0:
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40              ip route add 192.168.2.0/24 dev eth0 realm 2
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42       The following route filter will then match packets from that subnet:
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44              tc filter add ... route from 2 classid 1:2
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46       and pass packets on to class 1:2.
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NOTES

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

54       tc(8), ip-route(8)
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58iproute2                          21 Oct 2015        Route classifier in tc(8)