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[GH-ISSUE #3000] No network connection when using wireless interface #1881

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opened 2026-05-05 08:32:57 -06:00 by gitea-mirror · 11 comments
gitea-mirror commented 2026-05-05 08:32:57 -06:00
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Originally created by @Cris70 on GitHub (Oct 14, 2019).
Original GitHub issue: https://github.com/netblue30/firejail/issues/3000

When I use --net=wlp3s0 (my wifi interface) there is no network connection.
I read elsewhere that wifi is not supported, but that was a few years ago... is it still true?
If so, can it be enabled? I found a few articles on how to move a wireless interface into a namespace.

Thank you in advance!

Originally created by @Cris70 on GitHub (Oct 14, 2019). Original GitHub issue: https://github.com/netblue30/firejail/issues/3000 When I use --net=wlp3s0 (my wifi interface) there is no network connection. I read elsewhere that wifi is not supported, but that was a few years ago... is it still true? If so, can it be enabled? I found a few articles on how to move a wireless interface into a namespace. Thank you in advance!
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gitea-mirror commented 2026-05-05 08:32:59 -06:00
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@Cris70 commented on GitHub (Oct 14, 2019):

Forgot to add details:
firejail version 0.9.60 on openSUSE Tumbleweed (kernel 5.3.2)

Compile time support:
- AppArmor support is enabled
- AppImage support is enabled
- chroot support is enabled
- file and directory whitelisting support is enabled
- file transfer support is enabled
- networking support is enabled
- overlayfs support is enabled
- private-home support is enabled
- seccomp-bpf support is enabled
- user namespace support is enabled
- X11 sandboxing support is enabled

<!-- gh-comment-id:541622697 --> @Cris70 commented on GitHub (Oct 14, 2019): Forgot to add details: firejail version 0.9.60 on openSUSE Tumbleweed (kernel 5.3.2) Compile time support: - AppArmor support is enabled - AppImage support is enabled - chroot support is enabled - file and directory whitelisting support is enabled - file transfer support is enabled - networking support is enabled - overlayfs support is enabled - private-home support is enabled - seccomp-bpf support is enabled - user namespace support is enabled - X11 sandboxing support is enabled
gitea-mirror commented 2026-05-05 08:33:00 -06:00
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@rusty-snake commented on GitHub (Oct 14, 2019):

For me it works with net wlpXs0 but only if I'm already connected.

<!-- gh-comment-id:541680031 --> @rusty-snake commented on GitHub (Oct 14, 2019): For me it works with `net wlpXs0` but only if I'm already connected.
gitea-mirror commented 2026-05-05 08:33:01 -06:00
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@Cris70 commented on GitHub (Oct 14, 2019):

@rusty-snake thank you for your comment. Unfortunately it doesn't work here, no matter the state of the connection.
I'll post a screenshot tomorrow as soon as I can.

<!-- gh-comment-id:541907364 --> @Cris70 commented on GitHub (Oct 14, 2019): @rusty-snake thank you for your comment. Unfortunately it doesn't work here, no matter the state of the connection. I'll post a screenshot tomorrow as soon as I can.
gitea-mirror commented 2026-05-05 08:33:03 -06:00
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@Cris70 commented on GitHub (Oct 21, 2019):

Sorry, forgot to send more information.
Here is the output of the ifconfig command to show that wifi is up and connected, and then wget (with firejail) that cannot connect:

~ > ifconfig
enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.24.252.51  netmask 255.255.252.0  broadcast 172.24.255.255
        inet6 fe80::3dca:33db:a8fe:80d0  prefixlen 64  scopeid 0x20<link>
        ether <amended>  txqueuelen 1000  (Ethernet)
        RX packets 1408808  bytes 693252364 (661.1 MiB)
        RX errors 0  dropped 69139  overruns 0  frame 0
        TX packets 324125  bytes 44978126 (42.8 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 20  memory 0xf0600000-f0620000

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 303690  bytes 423935884 (404.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 303690  bytes 423935884 (404.2 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.232.0.154  netmask 255.255.254.0  broadcast 10.232.1.255
        inet6 fe80::c66b:e3cc:4578:4601  prefixlen 64  scopeid 0x20<link>
        ether <amended>  txqueuelen 1000  (Ethernet)
        RX packets 1625  bytes 275978 (269.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1335  bytes 199957 (195.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

~ > LANG=C firejail --net=wlp3s0 wget http://hobbes.nmsu.edu/index.html
--2019-10-21 12:49:10--  http://hobbes.nmsu.edu/index.html
Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.34.6
Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.34.6|:80... failed: Network is unreachable.
<!-- gh-comment-id:544461315 --> @Cris70 commented on GitHub (Oct 21, 2019): Sorry, forgot to send more information. Here is the output of the ifconfig command to show that wifi is up and connected, and then wget (with firejail) that cannot connect: ``` ~ > ifconfig enp0s25: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.24.252.51 netmask 255.255.252.0 broadcast 172.24.255.255 inet6 fe80::3dca:33db:a8fe:80d0 prefixlen 64 scopeid 0x20<link> ether <amended> txqueuelen 1000 (Ethernet) RX packets 1408808 bytes 693252364 (661.1 MiB) RX errors 0 dropped 69139 overruns 0 frame 0 TX packets 324125 bytes 44978126 (42.8 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 20 memory 0xf0600000-f0620000 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 303690 bytes 423935884 (404.2 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 303690 bytes 423935884 (404.2 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 10.232.0.154 netmask 255.255.254.0 broadcast 10.232.1.255 inet6 fe80::c66b:e3cc:4578:4601 prefixlen 64 scopeid 0x20<link> ether <amended> txqueuelen 1000 (Ethernet) RX packets 1625 bytes 275978 (269.5 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1335 bytes 199957 (195.2 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ~ > LANG=C firejail --net=wlp3s0 wget http://hobbes.nmsu.edu/index.html --2019-10-21 12:49:10-- http://hobbes.nmsu.edu/index.html Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.34.6 Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.34.6|:80... failed: Network is unreachable. ```
gitea-mirror commented 2026-05-05 08:33:04 -06:00
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@netblue30 commented on GitHub (Nov 5, 2019):

Question: do you two have default routes set up, one for the regular ethernet interface and one for wlan? Maybe the sandbox is picking up the wrong one? Run this two commands:

# ip route show
# sudo firejail --net=wlp3s0 ip route show
<!-- gh-comment-id:549952202 --> @netblue30 commented on GitHub (Nov 5, 2019): Question: do you two have default routes set up, one for the regular ethernet interface and one for wlan? Maybe the sandbox is picking up the wrong one? Run this two commands: ````` # ip route show # sudo firejail --net=wlp3s0 ip route show `````
gitea-mirror commented 2026-05-05 08:33:05 -06:00
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@Cris70 commented on GitHub (Nov 6, 2019):

Hi @netblue30 here are the results:

~> ip route show
default via 172.24.252.1 dev enp0s25 proto dhcp metric 20100
default via 10.232.0.1 dev wlp3s0 proto dhcp metric 20600
10.232.0.0/23 dev wlp3s0 proto kernel scope link src 10.232.0.154 metric 600
172.24.252.0/22 dev enp0s25 proto kernel scope link src 172.24.252.51 metric 100

~> sudo firejail --net=wlp3s0 ip route show
Error: cannot read UID_MIN and/or GID_MIN from /etc/login.defs, using 1000 by default
Reading profile /etc/firejail/server.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-passwdmgr.inc
Reading profile /etc/firejail/disable-programs.inc

** Note: you can use --noprofile to disable server.profile **

Parent pid 5101, child pid 5102
The new log directory is /proc/5102/root/var/log

Interface        MAC                IP               Mask             Status
lo                                  127.0.0.1        255.0.0.0        UP
eth0-5101        e8:b1:fc:ac:2f:56  10.232.0.237     255.255.254.0    UP

Child process initialized in 1087.08 ms
10.232.0.0/23 dev eth0-5101 proto kernel scope link src 10.232.0.237

Parent is shutting down, bye...
<!-- gh-comment-id:550210423 --> @Cris70 commented on GitHub (Nov 6, 2019): Hi @netblue30 here are the results: ``` ~> ip route show default via 172.24.252.1 dev enp0s25 proto dhcp metric 20100 default via 10.232.0.1 dev wlp3s0 proto dhcp metric 20600 10.232.0.0/23 dev wlp3s0 proto kernel scope link src 10.232.0.154 metric 600 172.24.252.0/22 dev enp0s25 proto kernel scope link src 172.24.252.51 metric 100 ``` ``` ~> sudo firejail --net=wlp3s0 ip route show Error: cannot read UID_MIN and/or GID_MIN from /etc/login.defs, using 1000 by default Reading profile /etc/firejail/server.profile Reading profile /etc/firejail/disable-common.inc Reading profile /etc/firejail/disable-passwdmgr.inc Reading profile /etc/firejail/disable-programs.inc ** Note: you can use --noprofile to disable server.profile ** Parent pid 5101, child pid 5102 The new log directory is /proc/5102/root/var/log Interface MAC IP Mask Status lo 127.0.0.1 255.0.0.0 UP eth0-5101 e8:b1:fc:ac:2f:56 10.232.0.237 255.255.254.0 UP Child process initialized in 1087.08 ms 10.232.0.0/23 dev eth0-5101 proto kernel scope link src 10.232.0.237 Parent is shutting down, bye... ```
gitea-mirror commented 2026-05-05 08:33:06 -06:00
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@ghost commented on GitHub (Jan 20, 2020):

@netblue30 I'm going over the issues list to label things and I stumbled on this one. For me (with firejail from git master) this is still broken:

$ firejail --net=wlp2s0 /usr/bin/wget http://hobbes.nmsu.edu/index.html
--2020-01-20 23:42:07--  http://hobbes.nmsu.edu/index.html
Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.88.139
Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.88.139|:80... failed: Network is unreachable.

I'll mark it as a bug, but more importantly, is there any update on this?

<!-- gh-comment-id:576462740 --> @ghost commented on GitHub (Jan 20, 2020): @netblue30 I'm going over the issues list to label things and I stumbled on this one. For me (with firejail from git master) this is still broken: ``` $ firejail --net=wlp2s0 /usr/bin/wget http://hobbes.nmsu.edu/index.html --2020-01-20 23:42:07-- http://hobbes.nmsu.edu/index.html Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.88.139 Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.88.139|:80... failed: Network is unreachable. ``` I'll mark it as a bug, but more importantly, is there any update on this?
gitea-mirror commented 2026-05-05 08:33:07 -06:00
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@Cris70 commented on GitHub (Jan 22, 2020):

No change here:

~ > LANG=C firejail --net=wlp3s0 /usr/bin/wget http://hobbes.nmsu.edu/index.html
Error: cannot read UID_MIN and/or GID_MIN from /etc/login.defs, using 1000 by default
--2020-01-22 09:10:34--  http://hobbes.nmsu.edu/index.html
Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.88.139
Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.88.139|:80... failed: Network is unreachable.

But I'm still using firejail 0.9.60: that's what openSuse Tumbleweed ships in his official repos.

<!-- gh-comment-id:577059109 --> @Cris70 commented on GitHub (Jan 22, 2020): No change here: ``` ~ > LANG=C firejail --net=wlp3s0 /usr/bin/wget http://hobbes.nmsu.edu/index.html Error: cannot read UID_MIN and/or GID_MIN from /etc/login.defs, using 1000 by default --2020-01-22 09:10:34-- http://hobbes.nmsu.edu/index.html Resolving hobbes.nmsu.edu (hobbes.nmsu.edu)... 128.123.88.139 Connecting to hobbes.nmsu.edu (hobbes.nmsu.edu)|128.123.88.139|:80... failed: Network is unreachable. ``` But I'm still using firejail 0.9.60: that's what openSuse Tumbleweed ships in his official repos.
gitea-mirror commented 2026-05-05 08:33:07 -06:00
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@matu3ba commented on GitHub (Sep 9, 2020):

@glitsj16 What OS do you use and is only wget broken for you?

@Cris70 Does the git master work for you? 0.9.60 is not a LTS, so the maintainers should ship 0.9.62.4

<!-- gh-comment-id:689213868 --> @matu3ba commented on GitHub (Sep 9, 2020): @glitsj16 What OS do you use and is only wget broken for you? @Cris70 Does the git master work for you? 0.9.60 is not a LTS, so the maintainers should ship 0.9.62.4
gitea-mirror commented 2026-05-05 08:33:08 -06:00
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@JsBergbau commented on GitHub (Jun 5, 2021):

For just binding to an Interface / forcing a program to access internet via a specific interface, have a look at bindToInterface https://github.com/JsBergbau/BindToInterface

This works with every network interface, including Wifi.

<!-- gh-comment-id:855256910 --> @JsBergbau commented on GitHub (Jun 5, 2021): For just binding to an Interface / forcing a program to access internet via a specific interface, have a look at bindToInterface https://github.com/JsBergbau/BindToInterface This works with every network interface, including Wifi.
gitea-mirror commented 2026-05-05 08:33:08 -06:00
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@Cris70 commented on GitHub (Aug 30, 2021):

Update: I am using version 0.9.66 and I still have this issue.

<!-- gh-comment-id:908122704 --> @Cris70 commented on GitHub (Aug 30, 2021): Update: I am using version 0.9.66 and I still have this issue.
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