The issue was that I had a tun
device, and deleting it turns out to be the solution.
First, run ifconfig
:
eth0 Link encap:Ethernet HWaddr ae:50:74:cc:73:ed inet addr:192.168.2.200 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::ac50:74ff:fecc:73ed/64 Scope:Link inet6 addr: 2003:72:2d65:e401:ac50:74ff:fecc:73ed/64 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3560109 errors:0 dropped:3 overruns:0 frame:0 TX packets:4436401 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1195365679 (1.1 GB) TX bytes:5572562837 (5.5 GB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:3616 errors:0 dropped:0 overruns:0 frame:0 TX packets:3616 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480408 (480.4 KB) TX bytes:480408 (480.4 KB) tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.8.0.1 P-t-P:10.8.0.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) wlp7s0 Link encap:Ethernet HWaddr a4:17:31:ec:29:e7 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Locate the tun
device and delete it (in this case, tun0
).
sudo ip link delete tun0
Now I got my full speed back.
Note: The network interface will reappear after a restart, but you do not need to delete it again. Just deleting it once will resolve it, and it's perfectly fine if the recreated interface stays.