Create a routing entry to a network interface

[jpo234]

Hi all,
I want to create a host routing entry that points to an interface, e.g. I want that all traffic to address 1.2.3.4 goes through interface 1.
"route add 1.2.3.4 IF 1" does not work, route requires a netmask and a gateway. This is something I don't have. A single host has no netmask and I don't have a gateway on the other end of the interface.

Any suggestions?

[jpo234]

To illustrate what I want, here is an example from Linux:

orbit-linux:/home/orbit # netstat -rn
Kernel IP Routentabelle
Ziel            Router          Genmask         Flags   MSS Fenster irtt Iface
10.1.25.0       0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         10.1.25.1       0.0.0.0         UG        0 0          0 eth0
orbit-linux:/home/orbit # route add -host 1.2.3.4 dev eth0
orbit-linux:/home/orbit # netstat -rn
Kernel IP Routentabelle
Ziel            Router          Genmask         Flags   MSS Fenster irtt Iface
1.2.3.4         0.0.0.0         255.255.255.255 UH        0 0          0 eth0
10.1.25.0       0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         10.1.25.1       0.0.0.0         UG        0 0          0 eth0