Library /sys$common/syshlp/TCPIP$UCP_HELP.HLB  —  route  MODIFIERS
    Modifiers provide initial values to metrics and other information
    maintained in the routing entry. All modifiers and their
    arguments are optional and must appear after the gateway field on
    the command line. The modifiers for the add, change, and delete
    commands are as follows:

    -all     Specifies that the kernel add or delete the specified
             route on all interfaces (for example, tu0 and tu1) that
             are in the same subnet as the gateway. Use this modifier
             only with the add and delete modifiers. Do not use -all
             with the -dev and -olddev modifiers.

    -blackhole
             Specifies that this route is a blackhole route.
             Packets sent to blackhole routes are dropped, and no
             notification is sent to the packet originators. This
             is different from a normal route, which allows packets
             to be forwarded out on it. You must specify 127.0.0.1
             (localhost) as the gateway argument.

    -cloning
             Generates a new route on use of this route.

    -dev device
             Specifies the interface device (for example, tu0 and
             fta0) to use in the routing entry. Use this modifier
             when you want to designate a particular interface for a
             route. If you do not specify this modifier, the route is
             added on the first interface that is found.

    -genmask mask
             Specifies that the netmask mask is used for all routes
             cloned from this route.

    -hopcount count
             Sets this route's maximum hopcount to count.

    -iface | -interface
             Specifies that this route is via an interface instead of
             via a gateway (gateway is the default). This means the
             destination is reachable directly via an interface; no
             intermediate system is required. The gateway parameter
             is the address of this host on the common network,
             indicating the interface to be used for transmission.

    -inet    Sets this route's type as AF_INET. When used with
             the delete or flush commands, only AF_INET routes are
             deleted.

    -inet6   Sets this route's type as AF_INET6. When used with
             the delete or flush commands, only AF_INET6 routes are
             deleted.

    -iso     Sets this route's type as AF_ISO. When used with
             the delete or flush commands, only AF_ISO routes are
             deleted.

    -link    Sets this route's type as AF_LINK. When used with
             the delete or flush commands, only AF_LINK routes are
             deleted.

    -        Specifies that this route contains valid link-layer
    llinfo   information.

    -lock    Locks the metric set by next modifier specified on the
             command line in the routing entry. A locked metric is
             not modified by the kernel. The following metrics can
             be locked: mtu, hopcount, recvpipe, sendpipe, ssthresh,
             rtt, and rttvar.

    -lockrest
             Locks the metrics set by all modifiers that follow on
             the command line in the routing entry. A locked metric
             is not modified by the kernel. The following metrics can
             be locked: mtu, hopcount, recvpipe, sendpipe, ssthresh,
             rtt, and rttvar.

    -mtu size
             Sets this route's maximum transmission unit (MTU), in
             bytes, to size.

    -netmask mask
             Specifies the subnet mask to use for the routing entry.
             Networks that use a nonstandard subnet must include
             this modifier. Specify this modifier after any optional
             modifiers. Do not specify this modifier if you specify
             a CIDR bitmask (/bitmask). Do not specify this modifier
             with the change command.

    -nofragtopmtu
             Specifies that fragment to path MTU size is disabled for
             this route.

    -nopmtudisc
             Specifies that path MTU discovery is disabled for this
             route.

    -olddev device
             Specifies the old interface device (for example, tu0
             and fta0) in the routing entry that you want to change.
             Use this modifier with the change command only to move a
             route from one interface to another. See the "Examples"
             section.

    -oldgateway name
             Specifies the old gateway in the routing entry that
             you want to change. Use this modifier with the change
             command only. See the "Examples" section.

    -oldinterface
             Specifies the old interface in the routing entry that
             you want to change. Use this modifier with the change
             command only.

    -osi     Sets this route's type as AF_ISO. When used with
             the delete or flush commands, only AF_ISO routes are
             deleted.

    -precedence value
             Sets the precedence of the route to value. Among
             equivalent routes to the same destination, the route
             with the lower precedence is preferred.

    -recvpipe bandwidth
             Sets this route's inbound delay bandwidth product (in
             bytes) to bandwidth.

    -        Specifies that this route is a reject route. Packets
    reject   sent to reject routes are dropped and messages
             designating the route as unreachable are sent to the
             packet originators. This is different from a normal
             route, which allows packets to be forwarded out on it.
             You must specify 127.0.0.1 (localhost) as the gateway
             argument.

    -rtt time
             Sets this route's round trip time (in microseconds) to
             time.

    -rttvar variance
             Sets this route's round trip time variance (in
             microseconds) to variance.

    -sendpipe bandwidth
             Sets this route's outbound delay bandwidth product (in
             bytes) to bandwidth.

    -ssthresh threshold
             Sets this route's outbound gateway buffer limit (in
             bytes) to threshold.
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