[Olsr-users] OLSR routing issue with highly connected node

[Jernej Kos]

Hello!

On 26. 12. 2014 11:59, Henning Rogge wrote:
>> AFAIK you need to do recvmsg on the socket in order to receive error
>> notifications received via ICMP messages.
> 
> I have to look this up later, maybe it could be integrated into the
> OONF/Olsrv2 codebase.

When reading, the socket operation would fail and generate EMSGSIZE. In
order to obtain more detailed information, one can fetch data from the
error queue using the MSG_ERRQUEUE flag on recvmsg (IP_RECVERR socket
option should first be set on the socket to enable this extended
reporting through the error queue).

I will also add this to our VPN implementation in order to detect
incorrect PMTUs between measurement intervals (currently PMTU is
measured periodically).


Jernej

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: OpenPGP digital signature
URL: <http://lists.olsr.org/pipermail/olsr-users/attachments/20141226/e8a3a8b0/attachment.sig>