FreeNAS 11.2U2 fails to replicate to previous version of FreeNAS with fast cipher
FreeNAS-11.2U2 fails to replicate datasets to a previous version of FreeNAS (e.g FreeNAS-11.1u7 or FreeNAS-11.2u1) with fast cipher .
With fast cipher the error message is:
Failed: Unknown cipher type 'arcfour256,arcfour128,blowfish-cbc,aes128-ctr,aes192-ctr,aes256-ctr'
It may be related to the openssh version: FreeNAS-11.2U2 uses openssh-portable-7.9.p1_1,1 instead of openssh-portable-7.5.p1_1,1 in FreeNAS-11.2U1 and FreeNAS-11.1U7
How to reproduce¶
- Create a two virtual machine, one with FreeNAS-11.2U2 and the other with FreeNAS-11.2U1
- Setup replication tasks between both machines
- Use standard cipher, but it takes more CPU