Testnet Bitcoin Connection refused (111)

[Bitcoin]

Testnet Bitcoin Connection refused (111)

I have ah Raspberry and i will a BTC & Lightning node set up.

my bitcoin.conf

testnet=3 
Bitcoind options
server=1
daemon=1
txindex=1
disablewallet=1 
 Connection settings
rpcuser=raspibolt
rpcpassword=1212431
addnode=104.237.131.138
addnode=151.80.205.132
addnode=192.155.82.123
addnode=74.220.255.190
addnode=80.100.203.151
 Raspberry Pi optimizations
dbcache=100
maxorphantx=10
maxmempool=50
maxconnections=40
maxuploadtarget=5000

I have the addnode from this thread:

testnet3 node sync process is very slow

in the getnetworkinfo stands:

"version": 160000,
  "subversion": "/Satoshi:0.16.0/",
  "protocolversion": 70015,
  "localservices": "000000000000040d",
  "localrelay": true,
  "timeoffset": 0,
  "networkactive": true,
  "connections": 17,
  "networks": 
  "warnings": "Warning: unknown new rules activated (versionbit 28)"

and in the debug log stands:

2018-04-24 17:39:51 connect() to 85.207.214.190:18333 failed after select(): Connection refused (111)
2018-04-24 17:38:16 connect() to [2001:470:c144:cafe::a]:18333 failed: Network is unreachable (101)

anyone have an idea where the error lies?

my testnet port: 18333 is open.

many thanks for the help!

regards

Source: Testnet Bitcoin Connection refused (111)