Linux/bash: How to get interface's IPv6 address?
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What command can I use to get IPv6 address of an interface in a script?
Update: Output of sed from one of answers.
$ ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::224:d7ff:fed0:4f5c/64 scope link
valid_lft forever preferred_lft forever
The other:
$ ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
$ ip addr show dev eth0
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:7b:e9:6c brd ff:ff:ff:ff:ff:ff
linux bash ipv6
edited Apr 10 '13 at 16:07
MoonSire
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
add a comment |
What command can I use to get IPv6 address of an interface in a script?
Update: Output of sed from one of answers.
$ ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::224:d7ff:fed0:4f5c/64 scope link
valid_lft forever preferred_lft forever
The other:
$ ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
$ ip addr show dev eth0
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:7b:e9:6c brd ff:ff:ff:ff:ff:ff
linux bash ipv6
edited Apr 10 '13 at 16:07
MoonSire
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33
add a comment |
What command can I use to get IPv6 address of an interface in a script?
Update: Output of sed from one of answers.
$ ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::224:d7ff:fed0:4f5c/64 scope link
valid_lft forever preferred_lft forever
The other:
$ ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
$ ip addr show dev eth0
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:7b:e9:6c brd ff:ff:ff:ff:ff:ff
linux bash ipv6
edited Apr 10 '13 at 16:07
MoonSire
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
What command can I use to get IPv6 address of an interface in a script?
Update: Output of sed from one of answers.
$ ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000
inet6 fe80::224:d7ff:fed0:4f5c/64 scope link
valid_lft forever preferred_lft forever
The other:
$ ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
$ ip addr show dev eth0
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
link/ether f0:de:f1:7b:e9:6c brd ff:ff:ff:ff:ff:ff
linux bash ipv6
linux bash ipv6
edited Apr 10 '13 at 16:07
MoonSire
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
edited Apr 10 '13 at 16:07
MoonSire
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
edited Apr 10 '13 at 16:07
MoonSire
8161825
edited Apr 10 '13 at 16:07
MoonSire
8161825
edited Apr 10 '13 at 16:07
MoonSire
8161825
8161825
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
asked Feb 14 '12 at 13:13
Ondra ŽižkaOndra Žižka
3792721
3792721
Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33
add a comment |
Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33
Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33
add a comment |
3 Answers
3
active
oldest
votes
You could use:
ip -6 addr
It will return all the IPv6 adresses you have configured.
answered Feb 14 '12 at 13:22
RobertRobert
7911512
add a comment |
There are lots of ways you could do this.
Here is one:
ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
It is similar to Robert's answer, except strips out the address only.
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
add a comment |
The other approaches mentioned here WILL FAIL if the IF is not named eth0. And in the world of SystemD, IF names are far from predictable as IF naming conventions have changed drastically
My approach instead finds & extracts the Global Unicast Address- whatever the IF might be named. The IPv6 address could be configured for wlan0- or any other name- and my bash snippet will successfully extract and expand it as a variable in a config file requiring the listening address to be specified.
IPV6GLOBALUNICAST="$(ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1)"
Paste below onto the CLI of a host with an IPv6 address configured to test it:
ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1
I'm using this with great success and hasn't failed in any circumstances to date. HTH- Terrence Houlahan
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
You could use:
ip -6 addr
It will return all the IPv6 adresses you have configured.
answered Feb 14 '12 at 13:22
RobertRobert
7911512
add a comment |
You could use:
ip -6 addr
It will return all the IPv6 adresses you have configured.
answered Feb 14 '12 at 13:22
RobertRobert
7911512
add a comment |
You could use:
ip -6 addr
It will return all the IPv6 adresses you have configured.
answered Feb 14 '12 at 13:22
RobertRobert
7911512
You could use:
ip -6 addr
It will return all the IPv6 adresses you have configured.
answered Feb 14 '12 at 13:22
RobertRobert
7911512
answered Feb 14 '12 at 13:22
RobertRobert
7911512
answered Feb 14 '12 at 13:22
RobertRobert
7911512
answered Feb 14 '12 at 13:22
RobertRobert
7911512
7911512
add a comment |
add a comment |
There are lots of ways you could do this.
Here is one:
ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
It is similar to Robert's answer, except strips out the address only.
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
add a comment |
There are lots of ways you could do this.
Here is one:
ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
It is similar to Robert's answer, except strips out the address only.
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
add a comment |
There are lots of ways you could do this.
Here is one:
ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
It is similar to Robert's answer, except strips out the address only.
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
There are lots of ways you could do this.
Here is one:
ip addr show dev eth0 | sed -e's/^.*inet6 ([^ ]*)/.*$/1/;t;d'
It is similar to Robert's answer, except strips out the address only.
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
answered Feb 14 '12 at 13:25
PaulPaul
48.7k14122150
48.7k14122150
add a comment |
add a comment |
The other approaches mentioned here WILL FAIL if the IF is not named eth0. And in the world of SystemD, IF names are far from predictable as IF naming conventions have changed drastically
My approach instead finds & extracts the Global Unicast Address- whatever the IF might be named. The IPv6 address could be configured for wlan0- or any other name- and my bash snippet will successfully extract and expand it as a variable in a config file requiring the listening address to be specified.
IPV6GLOBALUNICAST="$(ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1)"
Paste below onto the CLI of a host with an IPv6 address configured to test it:
ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1
I'm using this with great success and hasn't failed in any circumstances to date. HTH- Terrence Houlahan
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
add a comment |
The other approaches mentioned here WILL FAIL if the IF is not named eth0. And in the world of SystemD, IF names are far from predictable as IF naming conventions have changed drastically
My approach instead finds & extracts the Global Unicast Address- whatever the IF might be named. The IPv6 address could be configured for wlan0- or any other name- and my bash snippet will successfully extract and expand it as a variable in a config file requiring the listening address to be specified.
IPV6GLOBALUNICAST="$(ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1)"
Paste below onto the CLI of a host with an IPv6 address configured to test it:
ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1
I'm using this with great success and hasn't failed in any circumstances to date. HTH- Terrence Houlahan
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
add a comment |
The other approaches mentioned here WILL FAIL if the IF is not named eth0. And in the world of SystemD, IF names are far from predictable as IF naming conventions have changed drastically
My approach instead finds & extracts the Global Unicast Address- whatever the IF might be named. The IPv6 address could be configured for wlan0- or any other name- and my bash snippet will successfully extract and expand it as a variable in a config file requiring the listening address to be specified.
IPV6GLOBALUNICAST="$(ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1)"
Paste below onto the CLI of a host with an IPv6 address configured to test it:
ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1
I'm using this with great success and hasn't failed in any circumstances to date. HTH- Terrence Houlahan
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
The other approaches mentioned here WILL FAIL if the IF is not named eth0. And in the world of SystemD, IF names are far from predictable as IF naming conventions have changed drastically
My approach instead finds & extracts the Global Unicast Address- whatever the IF might be named. The IPv6 address could be configured for wlan0- or any other name- and my bash snippet will successfully extract and expand it as a variable in a config file requiring the listening address to be specified.
IPV6GLOBALUNICAST="$(ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1)"
Paste below onto the CLI of a host with an IPv6 address configured to test it:
ip -6 addr|awk '{print $2}'|grep -P '^(?!fe80)[[:alnum:]]{4}:.*/64'|cut -d '/' -f1
I'm using this with great success and hasn't failed in any circumstances to date. HTH- Terrence Houlahan
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
edited yesterday
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
answered Feb 7 at 9:07
F1LinuxF1Linux
1215
1215
add a comment |
add a comment |
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Which IPv6 addresses? Your interfaces' IPv6 addresses?
– m0skit0
Feb 14 '12 at 13:27
Yes, edited, thx.
– Ondra Žižka
Feb 21 '12 at 4:33