[Olsr-dev] rifs->int_mtu and /sys/class/net/wlan0/mtu have different values

[Hans-Christoph Steiner]

On Jun 6, 2012, at 2:26 AM, Henning Rogge wrote:

> On 06/05/2012 11:25 PM, Hans-Christoph Steiner wrote:
>> 
>> I'm just in the process of adding the wifi information to the jsoninfo
>> plugin and I noticed something odd on my wlan0:
>> 
>> rifs->int_mtu in olsrd is 1472
>> 
>> /sys/class/net/wlan0/mtu is 1500
> 
> 1500 bytes (MTU) - 20 bytes (IPv4) - 8 bytes (UDP) = 1472 bytes
> 
> Its an estimate how large OLSR packets are allowed to grow.
> 
> Henning Rogge

Ah, ok, so this is ethernet MTU versus OLSR MTU?

.hc