unreliable connection

[Erich Eckner]

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Hi,

I recently upgraded tinc from 1.0.36 to 1.1pre18 on one of my nodes and I 
see some connection trouble since then.

My topology is attached.

All nodes were running 1.0.36 before and the net worked fine. Recently, I 
updated "desk" to 1.1pre18 (it's the only node running crux linux, all the 
others run archlinux) and now connections from "desk" to "backup_lo" and 
"nlopc43" are really unreliable: pings and ssh mostly time out, but 
*sometimes* succeed - it seems, the *first* time, pings come through, but 
once I quit "ping" and restart, they won't.

Other connections work fine, as far as I can tell - especially from 
"fenster" to "backup_lo" and between "desk", "fenster" and "home".

Increasing debug level on "desk" didn't bring anything up, except, that 
tinc apparently now prefers ed25519 keys, so I created one on "desk", put 
it into the host configs on "home" and "fenster" and restarted tinc on 
"desk", "fenster" and "home". But nothing changed :-(

I'm out of ideas - what should I try next? I could think of tcpdump'ing 
the connections on any node, but I have no real idea, what filters to use 
:-/

regards,
Erich

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