I have some problems with large packets send from CSM VIP towards clients over
a GRE Tunnel with MTU 1400.
Some packets are send out with don't fragment flag set and some with unset flag.
Question1: is it possible to influence CSM don't fragment flag behaviour via configuration ?
Question2: is CSM able to react on ICMP type 3 code 4, in other words is CSM able to perform MTU path discovery ?
Would be happy about any answer.