☰

Exibir apenas as interfaces de rede que possuem o endereço IP usando o comando ip

tag-icon • tag-icon networking ip linux-networking ifconfig filtering
Exibir apenas as interfaces de rede que possuem o endereço IP usando o comando ip

Eu uso ipum para obter o endereço IP da minha máquina. Às vezes, fica difícil identificar quando tenho mais de 20 interfaces de rede.

Existe uma maneira de exibir apenas interfaces de rede que possuem IP? A interface de rede que não possui o endereço IP deve ser ignorada e não deve ser exibida.

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
   valid_lft forever preferred_lft forever
inet6 ::1/128 scope host 
   valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 4c:cc:6a:32:42:0b brd ff:ff:ff:ff:ff:ff
inet 10.76.99.232/23 brd 10.76.99.255 scope global noprefixroute dynamic eno1
   valid_lft 81438sec preferred_lft 81438sec
inet6 fe80::4cd3:b92f:e2:54c8/64 scope link noprefixroute 
   valid_lft forever preferred_lft forever
3: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 52:54:00:67:f0:89 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
   valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:67:f0:89 brd ff:ff:ff:ff:ff:ff   
5: virbr1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:8e:77:61 brd ff:ff:ff:ff:ff:ff
inet 192.168.100.1/24 brd 192.168.100.255 scope global virbr1
   valid_lft forever preferred_lft forever
6: virbr1-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr1 state DOWN group default qlen 1000
link/ether 52:54:00:8e:77:61 brd ff:ff:ff:ff:ff:ff
7: br-251ee4bbddbc: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
link/ether 02:42:59:14:5d:96 brd ff:ff:ff:ff:ff:ff
inet 172.20.0.1/16 brd 172.20.255.255 scope global br-251ee4bbddbc
   valid_lft forever preferred_lft forever
inet6 fe80::42:59ff:fe14:5d96/64 scope link 
   valid_lft forever preferred_lft forever
8: br-7d1010889446: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
link/ether 02:42:e9:35:47:a7 brd ff:ff:ff:ff:ff:ff
inet 172.19.0.1/16 brd 172.19.255.255 scope global br-7d1010889446
   valid_lft forever preferred_lft forever
9: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
link/ether 02:42:a2:bf:15:a8 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
   valid_lft forever preferred_lft forever
inet6 fe80::42:a2ff:febf:15a8/64 scope link 
   valid_lft forever preferred_lft forever
11: veth42032d5@if10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-251ee4bbddbc state UP group default 
link/ether 56:1f:89:31:03:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet6 fe80::541f:89ff:fe31:302/64 scope link 
   valid_lft forever preferred_lft forever 
13: veth6b578c7@if12: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default 
link/ether da:12:96:51:48:48 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::d812:96ff:fe51:4848/64 scope link 
   valid_lft forever preferred_lft forever
15: veth36b9b3b@if14: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-251ee4bbddbc state UP group default 
link/ether 9e:89:cb:57:36:67 brd ff:ff:ff:ff:ff:ff link-netnsid 2
inet6 fe80::9c89:cbff:fe57:3667/64 scope link 
   valid_lft forever preferred_lft forever
34: br-22ddff6ae6ef: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
link/ether 02:42:d7:77:d5:2d brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-22ddff6ae6ef
   valid_lft forever preferred_lft forever

Resultado esperado (aproximadamente):

1. eno1: 10.76.99.232 
3. virbr0: 192.168.122.1
5. virbr1: 192.168.100.1

etc.

Estou procurando alguma forma nativa de filtrar usando ipa ferramenta. O uso de outras ferramentas para obter o resultado esperado também é apreciado.

Responder1

ip -4 -brief address show

exibirá informações mínimas de endereço, mostrando apenas as interfaces com endereços IPv4, já que instruído a exibir apenas endereços IPv4 (ou seja: não endereços Ethernet nem IPv6).

Esta opção foi adicionada recentemente (2015) aos utilitários iproute2 e demorou para migrar para as distribuições. Por exemplo, é:

  • disponível no Debian 9, mas não no Debian 8
  • disponível no RHEL 7.5, mas não em algumas versões anteriores do RHEL 7.

O commit upstream:

adicione suporte para resultados breves para links e endereços

A saída provavelmente começaria com:

$ ip -4 -brief address show
lo               UNKNOWN        127.0.0.1/8 
eno1             UP             10.76.99.232/23
virbr0           UP             192.168.122.1/24 
virbr1           UP             192.168.100.1/24

...

Responder2

ip -o addr show

seria uma opção. Ele mostra cada endereço IP em uma linha, com múltiplas linhas para interfaces com mais de um endereço IP e nenhuma linha para interfaces sem endereço.

Ler man ip.

informação relacionada