[Olsr-users] Too big packets | > 1420 Bytes!
Sat Aug 11 22:49:05 CEST 2012
I have a VPN-Tunnel that runs over a PPPoE-Link, so i have only 1492
Bytes available. The VPN-Tunnel is established via UDP, so i have 8
Bytes (MAC), and 12 Bytes (UDP) overhead. So the remaining MTU is 1472
Bytes for the inner Layer-2.
So there are 1452 Bytes left for OLSR.
But OLSR currently send out packets with more then 1452 Bytes, so the
VPN-Tunnel goes down and automatically get reestablished.
> Aug 11 21:18:50 vtund: Session
> neubichl-dsl-backup[79.192.xxx.xxx:46105] opened
> Aug 11 21:18:50 vtund: UDP connection initialized
> Aug 11 21:19:29 vtund: Message too long (90)
> Aug 11 21:19:29 vtund: Session neubichl-dsl-backup closed
currently i drop packages over 1420 bytes that are passing the
> iptables -A OUTPUT -o tap107 -m length --length 1420: -j DROP
since that, the VPN-Tunnel is stable.
> ~ # ip route show table olsr-network | wc -l
currently there are 84 routes spreaded over the whole network via OLSR.
That can not result in a so high package size? How can i reduce the
packet-size, or what have to be done, so olsr does not eat up more then
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