Comandos de la terminal/ifconfig

[root@Llawyr ~]# ifconfig --help
Usage:
  ifconfig [-a] [-v] [-s] <interface> [[<AF>] <address>]
  [add <address>[/<prefixlen>]]
  [del <address>[/<prefixlen>]]
  [[-]broadcast [<address>]]  [[-]pointopoint [<address>]]
  [netmask <address>]  [dstaddr <address>]  [tunnel <address>]
  [outfill <NN>] [keepalive <NN>]
  [hw <HW> <address>]  [metric <NN>]  [mtu <NN>]
  [[-]trailers]  [[-]arp]  [[-]allmulti]
  [multicast]  [[-]promisc]
  [mem_start <NN>]  [io_addr <NN>]  [irq <NN>]  [media <type>]
  [txqueuelen <NN>]
  [[-]dynamic]
  [up|down] ...

  <HW>=Hardware Type.
  List of possible hardware types:
    loop (Local Loopback) slip (Serial Line IP) cslip (VJ Serial Line IP) 
    slip6 (6-bit Serial Line IP) cslip6 (VJ 6-bit Serial Line IP) adaptive (Adaptive Serial Line IP) 
    ash (Ash) ether (Ethernet) ax25 (AMPR AX.25) 
    netrom (AMPR NET/ROM) rose (AMPR ROSE) tunnel (IPIP Tunnel) 
    ppp (Point-to-Point Protocol) hdlc ((Cisco)-HDLC) lapb (LAPB) 
    arcnet (ARCnet) dlci (Frame Relay DLCI) frad (Frame Relay Access Device) 
    sit (IPv6-in-IPv4) fddi (Fiber Distributed Data Interface) hippi (HIPPI) 
    irda (IrLAP) ec (Econet) x25 (generic X.25) 
    infiniband (InfiniBand) 
  <AF>=Address family. Default: inet
  List of possible address families:
    unix (UNIX Domain) inet (DARPA Internet) inet6 (IPv6) 
    ax25 (AMPR AX.25) netrom (AMPR NET/ROM) rose (AMPR ROSE) 
    ipx (Novell IPX) ddp (Appletalk DDP) ec (Econet) 
    ash (Ash) x25 (CCITT X.25) 

[root@Llawyr ~]# rpm -qf `which ifconfig`
net-tools-1.60-38.mga4

ifconfig es desfasado, Debemos utilizar el comando ip

[root@Llawyr ~]# ifconfig
enp4s0    Link encap:Ethernet  HWaddr 10:BF:48:08:02:FB  
          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)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:578 errors:0 dropped:0 overruns:0 frame:0
          TX packets:578 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:638393 (623.4 KiB)  TX bytes:638393 (623.4 KiB)

wlp3s0    Link encap:Ethernet  HWaddr 94:DB:C9:9D:51:3A  
          inet addr:192.168.51.57  Bcast:192.168.51.255  Mask:255.255.255.0
          inet6 addr: fe80::96db:c9ff:fe9d:513a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:29177601 errors:0 dropped:0 overruns:0 frame:0
          TX packets:27700924 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:32012824349 (29.8 GiB)  TX bytes:24862418544 (23.1 GiB)

[root@Llawyr ~]# ifconfig enp4s0
enp4s0    Link encap:Ethernet  HWaddr 10:BF:48:08:02:FB  
          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 ~]# ifconfig wlp3s0
wlp3s0    Link encap:Ethernet  HWaddr 94:DB:C9:9D:51:3A  
          inet addr:192.168.51.57  Bcast:192.168.51.255  Mask:255.255.255.0
          inet6 addr: fe80::96db:c9ff:fe9d:513a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:29180945 errors:0 dropped:0 overruns:0 frame:0
          TX packets:27704137 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:32016798252 (29.8 GiB)  TX bytes:24862709723 (23.1 GiB)

[root@Llawyr ~]# ifconfig enp4s0 10.11.12.13 netmask 255.255.0.0

[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 ~]# 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 PROMISC 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 ~]# ifconfig  enp4s0 down

[root@Llawyr ~]# ifconfig  enp4s0
enp4s0    Link encap:Ethernet  HWaddr 10:BF:48:08:02:FB  
          UP BROADCAST PROMISC 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)