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Global speed limits dont work when having set a specific interface (e.g. VPN) #17181
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starred/qBittorrent#17181
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Originally created by @ojsl1 on GitHub (Sep 17, 2025).
qBittorrent & operating system versions
qbittorrent: 5.1.2-1 (all from distro repos)
OS: Manjaro Linux KDE
Qt: 6.9.2
libtorrent-rasterbar: 1:2.0.11-4
Verified it also happens with newest commits:
qbittorrent-git:1:5.2.0alpha1.r366.gc075097ac-1
What is the problem?
Global speed limits don't work when using a specific interface (e.g. VPN) via:
Preferences -> Advanced -> Network InterfaceNB: setting specific speed limits from
Torrent Options -> Torrent Speed Limitsstill works.Steps to reproduce
Additional context
It's been happening for at least four months now (I keep my system up-to-date frequently).
Log(s) & preferences file(s)
qbittorent.conf
paths, ports and addresses redacted with XXXX
@tretretrer commented on GitHub (Dec 2, 2025):
Same issue on qBittorrent v5.1.0 (64-bit)
Windows 10
Same steps as OP.
I tried: Setting alt speed, global speed. Disabling them. Enabling them again. Restarting QB. Setting Network Interface to Any and back to the VPN.
Only thing that limit speed is going into the Torrent option and setting a limit per torrent. Which is not viable.
EDIT:
Further tests :
While on Any interface :
Disconnected from VPN with Kill switch activated :
The torrent was still being downloaded using the Wifi interface (while browser and Pings were blocked)
Troublesome that qBittorent doesnt use the VPN by default, and you'd expect that any traffic goes through the VPN, but that's more a problem for the VPN software i guess.
i THINK quitting the VPN, setting to Any interface, setting a limit and restarting QB did fix the problem, but changing back to VPN interface broke it again. Will have to do some more tests.