tc-route8
Route traffic control filter
Usage
tc filter ...
route
[{from
REALM | fromif
TAG}]
[to
REALM]
[classid
CLASSID]
[action
ACTION_SPEC]
Overview
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
actionACTION_SPEC-
Apply an action from the generic actions framework on matching packets.
classidCLASSID-
Push matching packets into the class identified by CLASSID.
fromREALM
fromifTAG-
Perform source route lookups. TAG is the name of an interface which must be present on the system at the time of
tcinvocation.
toREALM-
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.
Releases
Unchanged in 6 releases since Debian 9 (Stretch).