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Boris's questions

Martin Hope
Boris
Asked: 2024-10-30 16:21:50 +0800 CST
  • 5

Em um script bash, quero obter o endereço IPv6 global da minha máquina para um determinado adaptador de rede (no meu caso, 'ens18'). Para começar, emiti o seguinte comando:

ip -6 addr

Isso me dá a seguinte saída, que contém o endereço que estou procurando:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000
    inet6 fd00::3170:4ff:eff4:a4ab/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 6736sec preferred_lft 3136sec
    inet6 2a02:8070:2982:4300:3170:4ff:eff4:a4ab/64 scope global dynamic mngtmpaddr noprefixroute 
       valid_lft 6736sec preferred_lft 3136sec
    inet6 af60::3170:4ff:eff4:a4ab/64 scope link 
       valid_lft forever preferred_lft forever
3: br-7ac197bd041e: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP 
    inet6 af60::42:80ff:fe52:3481/64 scope link 
       valid_lft forever preferred_lft forever
4: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP 
    inet6 af60::42:6eff:fecf:5e6/64 scope link 
       valid_lft forever preferred_lft forever
6: veth074f8b0@if5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP 
    inet6 af60::7073:40ff:fe59:aad0/64 scope link 
       valid_lft forever preferred_lft forever
8: vethe85ed67@if7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP 
    inet6 af60::5c09:65ff:fe34:34f4/64 scope link 
       valid_lft forever preferred_lft forever

Então o endereço IPv6 global é "2a02:8070:2982:4300:3170:4ff:eff4:a4ab".

Como posso recuperar esse valor de forma confiável do meu script bash?

bash