How should I make the MTU stick after a reboot of monowall ?
I installed b13 (which obviously rebooted), and my sites stopped working 
again, when trying to go via a VLAN.

I did an ifconfig, and saw that all my VLAN's are back at 1500, how do I 
make the MTU permanent ?
I guess that I have to modify the config.xml, and reload it - but a more 
cosmetic option might be handy :)


kind regards,
Michel



Chris Buechler wrote:
> On Sun, Jul 13, 2008 at 1:48 PM, Michel Servaes <michel at mcmc dot be> wrote:
>   
>> I think I solved my issue here... since VLAN tagging is 4 bytes more than
>> normal Ethernet (I've been digging), I gathered that having a larger MTU at
>> VLAN level could have some troubles at the LAN being 1500.
>> So I lowered the MTU value of all my VLAN's to 1496, and kept LAN/WAN at
>> 1500 - and voila, my troubles went away !!  (didn't even have to reboot
>> anything - nor the monowall, nor my laptop, it just started working after :
>>
>> ifconfig vlan0 mtu 1496
>> ifconfig vlan1 mtu 1496
>> ...
>>
>> I can now access the internet without any troubles on each VLAN.
>>
>>     
>
> That's what the new NIC should have resolved, it should allow the
> larger frames with the VLAN tagging.  Apparently it was an issue with
> your switch rather than your NIC. This is a suitable work around since
> it fixes PMTUD, so you should be fine running this way.
>
> -Chris
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: m0n0wall dash unsubscribe at lists dot m0n0 dot ch
> For additional commands, e-mail: m0n0wall dash help at lists dot m0n0 dot ch
>
>