Man ip route add vs man route add

Man ip route add:

Synopsis:
ip route { add | del | change | append | replace } ROUTE

       SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ] [ table TABLE_ID ] [ proto RTPROTO ] [ type TYPE ] [ scope SCOPE ]

       ROUTE := NODE_SPEC [ INFO_SPEC ]

       NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ] [ table TABLE_ID ] [ proto RTPROTO ] [ scope SCOPE ] [ metric METRIC ]

       INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ] ...

       NH := [ via ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS

       OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ] [ window NUMBER ] [ cwnd NUMBER ] [ ssthresh REALM ] [ realms REALM ] [ rto_min TIME ] [ initcwnd NUMBER ] [ initrwnd NUMBER
               ] [ quickack BOOL ]

       TYPE := [ unicast | local | broadcast | multicast | throw | unreachable | prohibit | blackhole | nat ]

       TABLE_ID := [ local| main | default | all | NUMBER ]

       SCOPE := [ host | link | global | NUMBER ]

       NHFLAGS := [ onlink | pervasive ]

       RTPROTO := [ kernel | boot | static | NUMBER ]


Description

ip route add
              add new route

Example

       ip route add default via 192.168.1.1 dev eth0
           Adds a default route (for all addresses) via the local gateway 192.168.1.1 that can be reached on device eth0.



Man route add:

SYNOPSIS
       route  [-v] [-A family |-4|-6] add [-net|-host] target [netmask Nm] [gw Gw] [metric N] [mss M] [window W] [irtt I] [reject] [mod] [dyn] [reinstate] [[dev] If]

DESCRIPTION
Route manipulates the kernel's IP routing tables.  Its primary use is to set up static routes to specific hosts or networks via an interface after it has been configured with the ifconfig(8) program.

       When the add or del options are used, route modifies the routing tables.  Without these options, route displays the current contents of the routing tables.

OPTIONS
Concise and to the point descriptions for each option

EXAMPLES (Lots of them!!)
       route add -net 127.0.0.0 netmask 255.0.0.0 dev lo
              adds the normal loopback entry, using netmask 255.0.0.0 and associated with the "lo" device (assuming this device was previously set up correctly with ifconfig(8)).

       route add -net 192.56.76.0 netmask 255.255.255.0 dev eth0
              adds a route to the local network 192.56.76.x via "eth0".  The word "dev" can be omitted here.

       route del default
              deletes the current default route, which is labeled "default" or 0.0.0.0 in the destination field of the current routing table.

       route add default gw mango-gw
              adds a default route (which will be used if no other route matches).  All packets using this route will be gatewayed through "mango-gw". The device which will actually be used for that route depends on how we can reach
              "mango-gw" - the static route to "mango-gw" will have to be set up before.

       route add ipx4 sl0
              Adds the route to the "ipx4" host via the SLIP interface (assuming that "ipx4" is the SLIP host).

       route add -net 192.57.66.0 netmask 255.255.255.0 gw ipx4
              This command adds the net "192.57.66.x" to be gatewayed through the former route to the SLIP interface.

       route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
              This is an obscure one documented so people know how to do it. This sets all of the class D (multicast) IP routes to go via "eth0". This is the correct normal configuration line with a multicasting kernel.

       route add -net 10.0.0.0 netmask 255.0.0.0 reject
              This installs a rejecting route for the private network "10.x.x.x."