[ixpmanager] IRRDB error handling

[Barry O'Donovan]

Nick Hilliard wrote on 15/03/2021 23:29:
> Pete Ashdown wrote on 15/03/2021 20:34:
>> I tried to take my install to v5.1.0 and step #4 bombed out after it 
>> had downgraded numerous libraries.
> 
> oh, hm, you're upgrading from v4.x. 


If you're upgrading from v4.x, the procedure is documented here:

https://github.com/inex/IXP-Manager/releases/tag/v5.0.0

(linked from the top of https://docs.ixpmanager.org/install/upgrading/ )

  - Barry