Hello,
I am having a weird problem with RouterOS and a few different RB’s ( 2011’s, but also happens on 951-n2 and so on ).
Basically i have 3 sites connected with bridged L2tp interfaces. Everything is working correctly. I have set mrru=1600 and traffic is flowing just fine between the 3 sites
The problem starts when i try to enable IPSec transport mode between the 2 public ip’s. If the mrru of the l2tp interfaces is modified, the L2TP client reboots within ~1 minute. If i leave it disabled, everything works fine ( with ipsec transport mode ).
To sum it up :
Working state 1 :
RTR L2TP Client 1 <------L2TP -------> RTR SRV <------L2TP -------> RTR L2TP Client 2
L2TP ( without set on the interfaces ), bridged to lan bridges. 1600 MRRU on the interfaces.
Working state 2 :
RTR 1 IPSEC Transport Mode <----------> RTR SRV <----------> RTR 2 IPSEC Transport Mode ( on their public ip’s)
RTR L2TP Client 1 <------L2TP -------> RTR SRV <------L2TP -------> RTR L2TP Client 2
L2TP ( without set on the interfaces ), bridged to lan bridges. Disabled MRRU on the interfaces.
Not working state ( the client is rebooting ) :
RTR 1 IPSEC Transport Mode <----------> RTR SRV <----------> RTR 2 IPSEC Transport Mode ( on their public ip’s)
RTR L2TP Client 1 <------L2TP -------> RTR SRV <------L2TP -------> RTR L2TP Client 2
L2TP ( without set on the interfaces ), bridged to lan bridges. 1600 ( or 1500 even ) MRRU on the interfaces.
I can post detailed configs, but i am pretty sure everything is default’ish as far as setting it up from the winbox goes. Even if it’s not, i don’t think a reboot is desired.
This happens on every 6.0 rc and on 5.24 also.
Can anyone test and confirm it, so i know i am not going insane ?