• IPv6hostslinux_ubuntu

IPv6 configuration on Ubuntu (dapper) systems

How can I enable/disable IPv6 globally?

Ubuntu dapper default supports IPv6, so you have to do nothing to enable IPv6. If you want do disable IPv6 globally, please read [:IPv6hostslinux disableIPv6:our section] on how to do it.

How can I enable forwarding between IPv6 enabled interfaces?

In /etc/sysctl.conf add the line

net/ipv6/conf/all/forwarding=1

and run

# sysctl -p /etc/sysctl.conf

Please note, you cannot enable/disable IPv6 forwarding per interface as in the IPv4 case. If you want to disable IPv6 forwarding for some interfaces, use netfilter/p6tables.

How can I enable/disable autoconfiguration on all interfaces?

Autoconfiguration is enabled by default. If you want to disable it for all interfaces, add the line

net/ipv6/conf/all/autoconf=0

to /etc/sysctl.conf and reload the file by sysctl as it is shown above.

How can I enable/disable router behaviour (i.e not to accept router advertisements) on all devices?

The kernel default accepts router advertisements. You can disable it on all interfaces by adding the line

net/ipv6/conf/all/accept_ra=0

to /etc/sysctl.conf and reloading it by sysctl.