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Chili0_
n00b
Joined: 09 Oct 2017
Posts: 71
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 Posted: Thu Dec 09, 2021 2:01 am Post subject: [Solved] How to add another loop device? |
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Hi,
According https://askubuntu.com/questions/444124/how-to-add-a-loopback-interface, I have successfully created a new loop device.
| Code: | lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2014825 bytes 1031007005 (983.2 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2014825 bytes 1031007005 (983.2 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo:0: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.2 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback) |
To make the new loop device auto generated, I created a net.lo0 in /etc/init.d/ with ln -s net.lo net.lo0 , in /etc/conf.d/net, I have | Quote: | | config_lo0="127.0.0.2 netmask 255.0.0.0" |
, but I got following errors while running /etc/init.d/net.lo0 restart
| Code: | $ sudo /etc/init.d/net.lo0 restart
Password:
* Bringing up interface lo0
* ERROR: interface lo0 does not exist
* Ensure that you have loaded the correct kernel module for your hardware
* ERROR: net.lo0 failed to start |
Any advice?
Thanks.
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Last edited by Chili0_ on Thu Dec 09, 2021 2:50 am; edited 3 times in total |
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Chili0_
n00b
Joined: 09 Oct 2017
Posts: 71
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| Posted: Thu Dec 09, 2021 2:43 am Post subject: |
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Frist: kernel should support dummy driver in Devices drivers -> Net driver support -> dummy
| Code: | | # ip link add name type dummy |
Then in /etc/conf.d/net
| Code: |
### Add one more loop device for dnscrypt-proxy
config_loop0="127.0.0.3 netmask 255.0.0.0"
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Finally，
| Code: | | /etc/init.d/net.loop0 start |
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fedeliallalinea
Administrator
Joined: 08 Mar 2003
Posts: 30915
Location: here
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| Posted: Thu Dec 09, 2021 9:18 am Post subject: |
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Moved from Other Things Gentoo to Networking & Security.
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Questions are guaranteed in life; Answers aren't. |
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UberLord
Retired Dev
Joined: 18 Sep 2003
Posts: 6835
Location: Blighty
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Chili0_
n00b
Joined: 09 Oct 2017
Posts: 71
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| Posted: Tue Dec 14, 2021 6:16 am Post subject: |
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| UberLord wrote: | | Code: | | lo:0: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 |
No, that's an aliased address to the lo interface.
It's not a new loopback device.
But that's probably what you want, it doesn't make sense to have more than one loopback interface.
Anyway, on Linux the preferred command is `ip a` which will show this in more clarity. |
Thanks, now I understand.
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dimko
Apprentice
Joined: 12 Feb 2006
Posts: 196
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| Posted: Thu Feb 10, 2022 11:44 pm Post subject: Could I ask |
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Why loop device?
Would TAP/TAN device not satisfy?
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