Quotation from Steven Honson at September 8, 2018 12:23:
> Have you added 172.16.0.0/24 to the AllowedIPs entry for the
> 172.16.215.2 Peer on 172.16.215.1?

no - thank you for pointing me there. i now added an
additional AllowedIPs line and it works!

thank's,
M. Dietrich