Hello!
I want to upgrade our 5.1.2 2xvSZ+2xvDP to 5.2.1 latest.
But I found from SZ-5.2.1-UpgradeGuide-RevA-20200731.pdf on page 23 this note:
"For remote APs connected over a VPN, the tunnel MTU must be reduced to 1400 (acceptable range is: 850 th...