Connection reset by peer

[Emibergo02]

Sometimes i get this on my NanoLimbo instance

10:41:19.788 ERROR Limbo -- Unhandled exception:
io.netty.channel.unix.Errors$NativeIoException: recvAddress(..) failed: Connection reset by peer
10:41:19.788 INFO  Limbo -- Player Unnm3d disconnected

And on Velocity

[10:41:19 INFO]: [connected player] Unnm3d (/2.44.77.167:60950) has disconnected: La tua connessione a auth1 ha incontrato un problema.
[10:41:19 ERROR]: [server connection] Unnm3d -> auth1: read timed out
[10:41:19 INFO]: [server connection] Unnm3d -> auth1 has disconnected

Can you help me find the cause?
Is it something related to velocity.toml?

[advanced]
# Specify a read timeout for connections here. The default is 30 seconds.
read-timeout = 10000