23 Feb
2014
23 Feb
'14
2:34 p.m.
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On 02/23/2014 02:24 AM, Gioacchino Mazzurco wrote:
Hi!
On one node we are announcing a tunIn for internet and anotherone
that have a corresponding tunOut is tring to reach internet, but
there is some problem, packets never reach the other nodes and
sniffing on interfaces never goes out from the originating node,
and on dmesg i have found some of this messages
[ 8829.860000] ip6_tunnel: bmxOut_9f4872: Path to destination
invalid or inactive!
That seems related ecause appears only on the node that is trying
to go out, is it a well known problem or it is necessary a deeper
debug ?
At least it's unknown to me. The message comes from ip6_tunnel kernel
module and (as far as I understand) is triggered when the kernel
catches a packet that is to be routed via the tunnel. Can you confirm
this? I mean does it appear when bmx6 creates the tunnel or when you
send a packet that should go via this tunnel. To test this start bmx6
on the originating node (I understand this is the tunnel client having
the bmxOut device) with parameter tunOutTimeout=0 (disabling the
automatic reactive tunnel setup). Also interesting would be which
kernel version you are running and if this happens with a specific
openWrt. Maybe the kernel developers have introduced some new validity
checks (that have not been there before) and that now detect packets
or routes as infeasible according to some RFC rules.
best
/axel
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