Hi, Maintainers
In our scene, we will create the 6in4/6to4 tunnel firstly and need to
check the tunnel type, secondly, we will configure the ip address on it.
So, Could we have any way to get the actual tunnel for 6in4 and 6to4
from current linux version?
Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux
kernel. The only difference is the ip address on the tunnel. Can we
distinguish them in Linux kernel?
Best Regards
Zhu Yanjun
Le 27/01/2014 11:39, zhuyj a ?crit :
> Hi, Maintainers
>
> In our scene, we will create the 6in4/6to4 tunnel firstly and need to check the
> tunnel type, secondly, we will configure the ip address on it. So, Could we have
> any way to get the actual tunnel for 6in4 and 6to4 from current linux version?
>
> Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux kernel. The
> only difference is the ip address on the tunnel. Can we distinguish them in
> Linux kernel?
Just check the prefix, like it is done in check_6rd().
Regards,
Nicolas
On 01/27/2014 08:59 PM, Nicolas Dichtel wrote:
> Le 27/01/2014 11:39, zhuyj a ?crit :
>> Hi, Maintainers
>>
>> In our scene, we will create the 6in4/6to4 tunnel firstly and need to
>> check the
>> tunnel type, secondly, we will configure the ip address on it. So,
>> Could we have
>> any way to get the actual tunnel for 6in4 and 6to4 from current linux
>> version?
>>
>> Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux
>> kernel. The
>> only difference is the ip address on the tunnel. Can we distinguish
>> them in
>> Linux kernel?
> Just check the prefix, like it is done in check_6rd().
>
>
> Regards,
> Nicolas
>
Hi, Nicolas
Thanks for your reply. Maybe I can configure 6to4 tunnel by the
following commands:
ip tunnel add tun6to4 mode sit remote any local 1.202.252.122 ttl 64
ip link set dev tun6to4 up
ip -6 addr add 2002:01ca:fc7a::0012:0225:2122/128 dev tun6to4
ip -6 route add 2000::/3 via ::192.88.99.1 dev tun6to4 metric 1
But the kernel can not identify the tunnel is 6to4 tunnel or 6in4 tunnel
immediately. After the packets travel through this tunnel, the kernel
can identify the type of the tunnel by check_6rd.
Is it right?
Best Regards!
Zhu Yanjun
On 01/28/2014 03:32 PM, zhuyj wrote:
> On 01/27/2014 08:59 PM, Nicolas Dichtel wrote:
>> Le 27/01/2014 11:39, zhuyj a ?crit :
>>> Hi, Maintainers
>>>
>>> In our scene, we will create the 6in4/6to4 tunnel firstly and need
>>> to check the
>>> tunnel type, secondly, we will configure the ip address on it. So,
>>> Could we have
>>> any way to get the actual tunnel for 6in4 and 6to4 from current
>>> linux version?
>>>
>>> Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux
>>> kernel. The
>>> only difference is the ip address on the tunnel. Can we distinguish
>>> them in
>>> Linux kernel?
>> Just check the prefix, like it is done in check_6rd().
>>
>>
>> Regards,
>> Nicolas
Hi, Nicolas
Thanks for your reply. Maybe I can configure 6to4 tunnel by the
following commands:
ip tunnel add tun6to4 mode sit remote any local 1.202.252.122 ttl 64
ip link set dev tun6to4 up
ip -6 addr add 2002:01ca:fc7a::0012:0225:2122/128 dev tun6to4
ip -6 route add 2000::/3 via ::192.88.99.1 dev tun6to4 metric 1
But the kernel can not identify the tunnel is 6to4 tunnel or 6in4 tunnel
immediately. After the packets travel through this tunnel, the kernel
can identify the type of the tunnel by check_6rd.
Is it right?
Best Regards!
Zhu Yanjun
On 01/28/2014 03:39 PM, zhuyj wrote:
> On 01/28/2014 03:32 PM, zhuyj wrote:
>> On 01/27/2014 08:59 PM, Nicolas Dichtel wrote:
>>> Le 27/01/2014 11:39, zhuyj a ?crit :
>>>> Hi, Maintainers
>>>>
>>>> In our scene, we will create the 6in4/6to4 tunnel firstly and need
>>>> to check the
>>>> tunnel type, secondly, we will configure the ip address on it. So,
>>>> Could we have
>>>> any way to get the actual tunnel for 6in4 and 6to4 from current
>>>> linux version?
>>>>
>>>> Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux
>>>> kernel. The
>>>> only difference is the ip address on the tunnel. Can we distinguish
>>>> them in
>>>> Linux kernel?
>>> Just check the prefix, like it is done in check_6rd().
>>>
>>>
>>> Regards,
>>> Nicolas
> Hi, Nicolas
> Thanks for your reply. Maybe I can configure 6to4 tunnel by the
> following commands:
>
> ip tunnel add tun6to4 mode sit remote any local 1.202.252.122 ttl 64
> ip link set dev tun6to4 up
> ip -6 addr add 2002:01ca:fc7a::0012:0225:2122/128 dev tun6to4
> ip -6 route add 2000::/3 via ::192.88.99.1 dev tun6to4 metric 1
>
> But the kernel can not identify the tunnel is 6to4 tunnel or 6in4
> tunnel immediately. After the packets travel through this tunnel, the
> kernel can identify the type of the tunnel by check_6rd.
>
> Is it right?
>
> Best Regards!
> Zhu Yanjun
>
>
Hi, David
I want to identify sit interface 6to4 or 6in4 with the following parameters.
include/uapi/linux/if_tunnel.h
...
struct ip_tunnel_parm {
char name[IFNAMSIZ];
int link;
__be16 i_flags; <---------I want
to use this variable to identify the type of sit interface. Can I?
__be16 o_flags;
__be32 i_key;
__be32 o_key;
struct iphdr iph;
};
...
Please comment on this ? Thanks a lot.
Best Regards!
Zhu Yanjun
Le 28/01/2014 08:39, zhuyj a ?crit :
> On 01/28/2014 03:32 PM, zhuyj wrote:
>> On 01/27/2014 08:59 PM, Nicolas Dichtel wrote:
>>> Le 27/01/2014 11:39, zhuyj a ?crit :
>>>> Hi, Maintainers
>>>>
>>>> In our scene, we will create the 6in4/6to4 tunnel firstly and need to check the
>>>> tunnel type, secondly, we will configure the ip address on it. So, Could we
>>>> have
>>>> any way to get the actual tunnel for 6in4 and 6to4 from current linux version?
>>>>
>>>> Both 6in4 and 6to4 have the same protocol ?IPPROTO_IPV6? in Linux kernel. The
>>>> only difference is the ip address on the tunnel. Can we distinguish them in
>>>> Linux kernel?
>>> Just check the prefix, like it is done in check_6rd().
>>>
>>>
>>> Regards,
>>> Nicolas
> Hi, Nicolas
> Thanks for your reply. Maybe I can configure 6to4 tunnel by the following commands:
>
> ip tunnel add tun6to4 mode sit remote any local 1.202.252.122 ttl 64
> ip link set dev tun6to4 up
> ip -6 addr add 2002:01ca:fc7a::0012:0225:2122/128 dev tun6to4
> ip -6 route add 2000::/3 via ::192.88.99.1 dev tun6to4 metric 1
>
> But the kernel can not identify the tunnel is 6to4 tunnel or 6in4 tunnel
> immediately. After the packets travel through this tunnel, the kernel can
> identify the type of the tunnel by check_6rd.
>
> Is it right?
As soon as you have added the ipv6 addresses, you know that this tunnel is a
6to4 tunnel.
But what problem are you trying to solve?
Regards,
Nicolas