Fortigate 7.4.8 - ADVPN Hub and Spoke firmware versions problems

[pacionet]

Hi,

we are trying to set up an Hub and Spoke VPN where Spoke have firmware 7.4.8 while Hub has firmware 7.2.11

We found some problems with these versions, while seems to work with spoke with firmware 7.4.7

We got troubles when we set up these flags:

auto discovery receiver -> ENABLED

device creation  -> ENABLED

on the spokes

Are there any bugs with latest firmware 7.4.8 ?

Are there minimum requirements with Hub firmware versions to support Spoke with 7.4.8 firmware?

Thanks

[RJ1]

There is known bug in 7.4.8 as below:

BUG ID: 140823 : IPsec tunnels stuck on spoke np6xlite drops the ESP packet.

[BillH_FTNT]

Hi pacionet,

Could you please let me know the device version (hardware) used in the Hub and Spoke setup?
Have you collected any debug logs or packet sniffers? If so, could you kindly share them with me?
Also,if can, please send your configuration to me via email at bhoang@fortinet.com.
I’d like to review your debug logs and configuration to try reproducing the issue in my lab. Thank you

Regards

Bill