Re: [PATCHv2] dracut-module-setup.sh: use auto6 for ipv6

[Kairui Song]

Thank you for the information.

On Mon, Dec 7, 2020 at 12:53 PM Pingfan Liu <piliu(a)redhat.com&gt; wrote:
>  The parameter either6 is introduced to dracut by
>  commit 67354eebbcd4c358b8194ba5fd1ab1cf7dbd42aa
>  Author: Pingfan Liu <piliu(a)redhat.com&gt;
>  Date:   Tue Apr 24 16:41:21 2018 +0800
>
>      40network: introduce ip=either6 option
>
>  But it turns out needless.
>
>  On a sensible ipv6 network environment, DHCPv6 can not work properly alone,
>  because DHCPv6 protocol has no info about the gateway.
>
>  An reasonalbe process of ipv6 address set up should look like
>     host send: Router Solicitation
>     router reply: Router Advertisements
>
>  "Router Advertisements" carries many info like gateway, and if it has
>  other-config flag set, it carries DNS info etc.  As for DHCPv6 address
>  allocation, it will only start if "Router Advertisements" has the
> 'managed'
>  flag set, which directs the host to start a stateful address allocation
>  from DHCPv6 server.
>
>  For more info:
>  rfc4861: Neighbor Discovery for IP version 6 (IPv6)
>  rfc5175: IPv6 Router Advertisement Flags Option
>
>  Signed-off-by: Pingfan Liu <piliu(a)redhat.com&gt;
>  ---
>   dracut-module-setup.sh | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
>  diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh
>  index 5c41e63..ec1ccc5 100755
>  --- a/dracut-module-setup.sh
>  +++ b/dracut-module-setup.sh
>  @@ -373,7 +373,7 @@ kdump_install_net() {
>       if [ -n "$_static" ]; then
>           _proto=none
>       elif is_ipv6_address $_srcaddr; then
>  -        _proto=either6
>  +        _proto=auto6
>       else
>           _proto=dhcp
>       fi
>  --
>  2.7.5
>  
Acked-by: Kairui Song <kasong(a)redhat.com&gt;

-- 
Best Regards,
Kairui Song