(usagi-users 01830) Re: About IPv6 over IPv6 tunnel

[Noriaki Takamiya <takamiya@xxxxxxxxxxxxx>]

Hello,

muraki.kazumi>     2000:40::2                            2000:60::1
muraki.kazumi>     +-------+      2000:40::10               +-----+
muraki.kazumi>     |       |eth0         +----+         eth0|     |
muraki.kazumi>     | host2 |-------------| RT |-------------|host1|
muraki.kazumi>     |       |             +----+             |     |
muraki.kazumi>     |       |               2000:60::10      +-----+
muraki.kazumi>     +-------+                      
muraki.kazumi> 
muraki.kazumi> 
muraki.kazumi> 
muraki.kazumi> I tried with these commands, and from host1,  
muraki.kazumi> ping6 2000:40::2 
muraki.kazumi> 
muraki.kazumi> But ping6 is not succeeded.
muraki.kazumi> The tcpdump data shows
:
muraki.kazumi> Is this packet format correct?
muraki.kazumi>   I think  "3c" -> "29"  and  "2900 0401 0401 0100" seems not needed.

  It is Destination Option Header. It is Encapsulation Limit.
  It is defined in RFC2473?

  And, If you want to remove this option header, add the following
  option to ipv6tunnel command:

ipv6tunnel add ip6tnl1 --tunnel-local-packets remote  ADDR2%eth0 \
  local ADDR1%eth0  dev eth0 encaplimit none

  Regards,

--
Noriaki Takamiya