[SOLVED] Slow internet

[john100]

The same problem exists in Ubuntu 16.04.1 (I use Ubuntu 14.04 - works fine). I use DSL connection, pppoe service, all network settings is default - I change only login, password and service fields. Laptop - DELL Inspirion 3542. (SHA256 is fine, DVD is fine, it was burned at slowest speed, tried different USB-sticks, DVD's). YouTube is slower that usually, some sites load slowly, some can't be loaded at all (speedtest.net, verizon.com/speedtest/).
Network card info:

Code:

Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
Subsystem: Dell Device 0651
Kernel driver in use: r8169

[leszek]

Not actually a clue here but did you try disabling ipv6? Maybe it helps.

[john100]

Not actually a clue here but did you try disabling ipv6? Maybe it helps.

I found solution here: https://forum.manjaro.org/t/kde-networkm...sue/3247/2
I tried to do this in Manjaro and it solves the problem. 
In Manjaro and Maui command ip link shows that MTU for ppp0 is 1500 instead of 1492 as it is in Ubuntu 14.04.

It is necessary to add:

Code:

[ppp]
mtu=1492

to:

Code:

/etc/NetworkManager/system-connections/[dsl-connection-name]

[spacepenguin]

I don't use DSL via pppoe, my PC is connected to a router. When I launch "ip link" MTU 1500 is shown for "enp3s0" which obviously is my network card. So do I have to change anything too?

[john100]

I don't use DSL via pppoe, my PC is connected to a router. When I launch "ip link" MTU 1500 is shown for "enp3s0" which obviously is my network card. So do I have to change anything too?

I would try Ubuntu 14.04 to see what value is set there, to see if internet faster there and change the value in Maui if necessary.

[leszek]

Normally for LAN connections the MTU 1500 is recommend

[spacepenguin]

Thank you for eliminating my doubts