[arch-projects] [netctl][PATCH] Disable IPv6 on IP6=no

[Jouke Witteveen]

On Sat, Jul 5, 2014 at 4:01 PM, Jouke Witteveen <j.witteveen at gmail.com> wrote:
> ---
> It was proposed to disable IPv6 entirely in case of "IP6=no".
> Currently we only disable processing of router advertisements.
> This looks OK to me, but I would really like to get some feedback on
> this one, as I cannot extensively test the consequences.
>  src/lib/ip | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/src/lib/ip b/src/lib/ip
> index 66aab56..9600504 100644
> --- a/src/lib/ip
> +++ b/src/lib/ip
> @@ -47,11 +47,12 @@ ip_set() {
>      case "$IP6" in
>        dhcp*|stateless|static)
>          [[ -d "/proc/sys/net/ipv6" ]] || modprobe ipv6
> +        sysctl -q -w "net.ipv6.conf.$interface_sysctl.disable_ipv6=0"
>          [[ $IP6 == "static" ]]
>          sysctl -q -w "net.ipv6.conf.$interface_sysctl.accept_ra=$?"
>        ;;
>        no)
> -        [[ -d "/proc/sys/net/ipv6" ]] && sysctl -q -w "net.ipv6.conf.$interface_sysctl.accept_ra=0"
> +        [[ -d "/proc/sys/net/ipv6" ]] && sysctl -q -w "net.ipv6.conf.$interface_sysctl.disable_ipv6=0"

That would be disable_ipv6=1, of course.

>        ;;
>        "")  # undefined IP6 does not prevent RA's from being received -> nop
>        ;;
> --
> 2.0.1
>