Wired bug with keyexchange and openssh

[Walter Harms]

hi List,
lately i had a problem with connecting via openssh (latest version from Ubuntu) to one of our emdedded systems.
Openssh requested ED25519 for hostkey exchange
dropbear accepted and tried to write a newly generated key -> and failed (its a RO system)
Openssh drops connection without any error msg

I am hope that this is a rar mistake and i am not sure if that is a real bug.
NTL i took me some time to understand the problem since openssh should have simply tried
an other cipher. I could "solve" the problem by forcing an other cipher (and installing ssh1 from ubuntu repo).
I do not want to dive into the code, maybe this will help somebody.

CU