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

[Jernej Kos]

Hello!

On 26. 12. 2014 12:15, Henning Rogge wrote:
> I am still not sure why the "do not fragment" flag is even set for
> Olsrd... I grepped for a few relevant constants and could not find any
> of them. Is this maybe a system default?

So you don't set the IP_MTU_DISCOVER option explicitly? There is a
system-wide default setting in /proc/sys/net/ipv4/ip_no_pmtu_disc and I
believe it is zero by default meaning that PMTU discovery should be
performed (and DF set). Not 100% sure though.


Jernej

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