Re: Debian 11: How to disable IPv6

[Greg <pld@sojka.co>]

On 7/9/22 15:52, Roger Price wrote:
> In a Debian 11 system, I would like to disable IPv6 adapters in order to 
> persuade fetchmail to talk to exim4.  The advice generally given is to 
> add a line to /etc/sysctl.conf
>
>   net.ipv6.conf.all.disable_ipv6 = 1
>
> and run sysctl -p as root.  With Debian 11 this generates the error message
>
>   sysctl: cannot stat /proc/sys/net/ipv6/conf/all/disable_ipv6: No such 
> file or directory
>
> because directory /proc/sys/net/ipv6 doesn't exist. What is the new way 
> of disabling IPv6?

ipv6.disable=1 as a bootarg

Regards