Setting MTU

Steve Flynn anothermindbomb at
Mon Nov 6 11:56:52 UTC 2006

On 06/11/06, Dotan Cohen <dotancohen at> wrote:
> When I check ifconfig, I see that my mtu is 1500. However, my ISP said
> that I should change it to 1392. So:
> $ sudo ifconfig mtu 1392
> SIOCSIFADDR: No such device
> mtu: ERROR while getting interface flags: No such device
> $
> Also, I connect via a Level1 router. Must I change the mtu in the
> router as well? Thanks in advance.

So long as the MTU in the router is greater than the MTU of your machine,
you won't need to change the router. What sort of connection do you have
there - ADSL? Cable? Satellite?

Despair - It's always darkest just before it goes pitch black...
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