[systemd-devel] SIT tunnel does not work

[Susant Sahani]

On 06/25/2014 04:50 PM, Tomasz Torcz wrote:
> On Sat, Jun 21, 2014 at 04:36:45PM +0530, Susant Sahani wrote:
>> On 06/21/2014 02:47 PM, Tomasz Torcz wrote:
>>> Hi,
>>>
>>>    I've tried to establish SIT tunnel to Hurricane Electric, using systemd v214.
>>> It does not work, device do not appear.  I'm concerned about networkd discarding
>>> part of netlink messages, see below.  Original instruction is provided by HE,
>>> rest is my shot at translating it into netdev (nb. manpage wasn't updated when
>>> tunnel features went in).
>>
>> The se.network file has conf problem. you need to put the interface
>> name rather tunnel name like eth0/em1
>>
>>>
>>> Original instruction:
>>> ---------------------
>>> modprobe ipv6
>>> ip tunnel add he-ipv6 mode sit remote 216.66.80.162 local 109.107.25.67 ttl 255
>>
>> ip tunnel add he-ipv6 mode sit remote 216.66.80.162 local dev eth0
>
>    The "local <IP>" part comes directly from HE instructionpage.  And it works,
> which is not the case for "local dev eth0" version:
>
> $ ip tunnel add he-ipv6 mode sit remote 216.66.80.162 local dev eth0
> Error: an IP address is expected rather than "dev"

The intention is that we need to the dev . Yes I missed providing the 
ipaddr.

>
> $ rpm -qf /usr/sbin/ip
> iproute-3.15.0-1.fc21.x86_64
>
>    (adding "dev" works if I ALSO provide "local ip" part:
> ip tunnel add he-ipv6 mode sit remote 216.66.80.162 local 109.107.25.67 ttl 255 dev eth0 )
>
>>> ip link set he-ipv6 up
>>> ip addr add 2001:470:70:68d::2/64 dev he-ipv6
>>> ip route add ::/0 dev he-ipv6
>>> ip -f inet6 addr
>>>
>>>
>>> $ cat he.netdev
>>> ---------------
>>> [NetDev]
>>> Name=he
>>> Kind=sit
>>>
>>> [Tunnel]
>>> Local=109.107.25.67
>>> Remote=216.66.80.162
>>>
>>>
>>> $ cat he.network
>>> ----------------
>>> [Match]
>>> Name=he
>>>
>> you need to supply the interface name here
>>
>> [Match]
>> Name=em1 <==========interface name
>
>    After putting in interface name tunnel is still not created:


could send do ip link output.


>
> # SYSTEMD_LOG_LEVEL=debug /lib/systemd/systemd-networkd
> timestamp of '/etc/systemd/network' changed
>                he: loaded sit
> sd-rtnl: discarding 20 bytes of incoming message
> could not add new link
>

> And no more lines mentioning neither "tunnel" nor "he".
>

-- 
Susant