[Soekris] changing mtu size on openbsd problems

[Alex French]

I've seen something similar when our DSL provider changed their MTU 
(and never warned anyone *grumble*). We had to drop ours to match, 
otherwise we had big slowdowns and large packets were dropped.

Alex

At 20:52 +0200 09/10/2005, Didier Wiroth wrote:
>Hi,
>
>I've been using my soekris 4801 (latest firmware) box for a few days 
>now with openbsd 3.8 and "kernel" pppoe.
>I used to change the mtu size with ifconfig in my hostname.pppoe0
>
>Here  was my hostname.pppoe0 file:
>pppoedev sis2
>!/sbin/ifconfig sis2 up mtu 1440
>!/usr/sbin/spppcontrol \$if myauthproto=pap myauthname=x \
>         myauthkey=y
>!/sbin/ifconfig \$if inet 0.0.0.0 0.0.0.1 netmask 0xffffffff
>!/sbin/route add default 0.0.0.1
>up
>
>As a result I had strange problems, I was not able able to browse 
>some sites for example: www.ebay.de, www.microsoft.com.
>
>I had to remove the mtu settings from hostname.pppoe0 and do this with pf:
>scrub out on pppoe0 max-mss 1440
>
>May be someone experienced the same problems?
>
>thank you for feedback
>didier
>
>
>
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