Disable IPV6 in Ubuntu to speed up Internet access

In Ubuntu/Kubuntu, turning tcp_ecn and ipv6 off can speed up Internet access by turning off the tcp_ecnsudosh-c "echo 'echo0 & gt;/proc/sys/net/ipv4/tcp_ecn' & gt;/etc/rcS. d/S60locale "sudochmod + x/etc/rcS. d/S60localesudo/etc/rcS. d/S60locale

Disabling tcp_ecn and ipv6 in Ubuntu/Kubuntu can speed up Internet access.

Disable tcp_ecn

Sudo sh-c "echo 'echo 0>/proc/sys/net/ipv4/tcp_ecn'>
/Etc/rcS. d/S60locale"
Sudo chmod + x/etc/rcS. d/S60locale
Sudo/etc/rcS. d/S60locale

Some sites use poor routers. It is better to access these sites after tcp_ecn is turned off.

Disable ipv6:
Modify/etc/modprobe. d/aliases
Note alias net-pf-10 ipv6
Add a line of alias net-pf-10 off below

After editing/etc/modprobe. d/aliases, run update-modules and reboot.
No more after restart

It is said that the network speed has improved after ipv6 is disabled.
However, some domestic education networks and scientific research networks use ipv6.

The standard practice is to add net. ipv4.tcp _ ecn = 0 to/etc/sysctl. conf.