#TIL : Disable IPv6 to stop getting stuck in network

Jan 16, 2018 4 mins read

Disable IPv6 to stop getting stuck in network

I know IPv6 will be future for networking, but at this moment “It’s suck !” :(

Some service will be failed when trying to connect IPv6 destination :

  • apt package manager
  • smtp
  • curl

So I decided to disable IPv6 on every production server.

$ echo "net.ipv6.conf.all.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
$ echo "net.ipv6.conf.default.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
$ echo "net.ipv6.conf.lo.disable_ipv6 = 1" | sudo tee -a /etc/sysctl.conf
$ 
$ sudo sysctl -p

I will re-enable it when everything works perfectly !

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