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route
[root@Llawyr ~]# route --help
Usage: route [-nNvee] [-FC] [<AF>] List kernel routing tables
route [-v] [-FC] {add|del|flush} ... Modify routing table for AF.
route {-h|--help} [<AF>] Detailed usage syntax for specified AF.
route {-V|--version} Display version/author and exit.
-v, --verbose be verbose
-n, --numeric don't resolve names
-e, --extend display other/more information
-F, --fib display Forwarding Information Base (default)
-C, --cache display routing cache instead of FIB
<AF>=Use '-A <af>' or '--<af>'; default: inet
List of possible address families (which support routing):
inet (DARPA Internet) inet6 (IPv6) ax25 (AMPR AX.25)
netrom (AMPR NET/ROM) ipx (Novell IPX) ddp (Appletalk DDP)
x25 (CCITT X.25)
[root@Llawyr ~]# route --version
net-tools 1.60
route 1.98 (2001-04-15)
+NEW_ADDRT +RTF_IRTT +RTF_REJECT +I18N
AF: (inet) +UNIX +INET +INET6 +IPX +AX25 +NETROM +X25 +ATALK +ECONET +ROSE
HW: +ETHER +ARC +SLIP +PPP +TUNNEL -TR +AX25 +NETROM +X25 +FR +ROSE +ASH +SIT +FDDI +HIPPI +HDLC/LAPB
route es desfasado, Debemos utilizar el comando ip
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
169.254.0.0 0.0.0.0 255.255.0.0 U 35 0 0 wlp3s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
[root@Llawyr ~]# ifconfig enp4s0 10.11.12.13 netmask 255.255.0.0 -promisc up
[root@Llawyr ~]# ifconfig enp4s0
enp4s0 Link encap:Ethernet HWaddr 10:BF:48:08:02:FB
inet addr:10.11.12.13 Bcast:10.11.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
10.11.0.0 0.0.0.0 255.255.0.0 U 0 0 0 enp4s0
169.254.0.0 0.0.0.0 255.255.0.0 U 35 0 0 wlp3s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
[root@Llawyr ~]# route add -net 172.16.0.0 netmask 255.255.255.0 gw 10.11.12.13 enp4s0
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
10.11.0.0 0.0.0.0 255.255.0.0 U 0 0 0 enp4s0
169.254.0.0 0.0.0.0 255.255.0.0 U 35 0 0 wlp3s0
172.16.0.0 10.11.12.13 255.255.255.0 UG 0 0 0 enp4s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
[root@Llawyr ~]# route del -net 169.254.0.0 netmask 255.255.0.0
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
10.11.0.0 0.0.0.0 255.255.0.0 U 0 0 0 enp4s0
172.16.0.0 10.11.12.13 255.255.255.0 UG 0 0 0 enp4s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
Flags:
U (route is up)
H (target is a host)
G (use gateway)
R (reinstate route for dynamic routing)
D (dynamically installed by daemon or redirect)
M (modified from routing daemon or redirect)
A (installed by addrconf)
C (cache entry)
! (reject route)
route add default gw NombreDelEnlace
[root@Llawyr ~]# route add -net 10.11.0.0 netmask 255.255.0.0 reject
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
10.11.0.0 - 255.255.0.0 ! 0 - 0 -
10.11.0.0 0.0.0.0 255.255.0.0 U 0 0 0 enp4s0
172.16.0.0 10.11.12.13 255.255.255.0 UG 0 0 0 enp4s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
[root@Llawyr ~]# route del -net 10.11.0.0 netmask 255.255.0.0 enp4s0
[root@Llawyr ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.51.1 0.0.0.0 UG 35 0 0 wlp3s0
10.11.0.0 - 255.255.0.0 ! 0 - 0 -
172.16.0.0 10.11.12.13 255.255.255.0 UG 0 0 0 enp4s0
192.168.51.0 0.0.0.0 255.255.255.0 U 35 0 0 wlp3s0
