title: Failed to connect GethNode to external GethNode
body: <p>i want to connect a local Geth-instance to my private Ethereum Network on a ubuntu Server.</p>
  
  System information
  
  <p>Geth version: <code>1.8.12</code>
  OS &amp; Version: Ubuntu 18.4</p>
  
  Expected behaviour
  
  <p>the local Geth-node is non-miner-node and i would like to send through this node transactions to my private-network (consists of Geth-Nodes) on my server.</p>
  
  Actual behaviour
  
  <p><code>net.peerCount</code> of my local GethNode returns 0</p>
  
  Steps to reproduce the behaviour
  
  <p>I use the bootnode to connect all nodes as seen on the <code>--bootnode</code>-flag
  Run Server Geth-node:
  <code>
  geth --datadir "./ethnode1" --networkid 2061 --port 30304  --rpc --rpcaddr 0.0.0.0 --rpccorsdomain "*" --rpcport 8545 --rpcapi="db,eth,net,web3,personal,web3" --ipcpath "./ethnode1/geth.ipc" --mine --minerthreads 1 --gasprice "10000" --etherbase 0xa17ae57bfb4a63b8cbd0c79bc74440791a2a6115 --verbosity 3 --bootnodes "enode://08622fab0c0b4f6268976eb8678ae4bc72271d726825d4a8a60034a7436ae199081294c4c35875a2ca65e8f2bfee3e7d26f727d96a39815d523b150805aff913@server-ip:30301" 
  </code>
   <code>
  geth --datadir "./ethnode2" --networkid 2061 --port 30305  --rpc --rpcaddr 0.0.0.0 --rpccorsdomain "*" --rpcport 8546 --rpcapi="db,eth,net,web3,personal,web3" --ipcpath "./ethnode2/geth.ipc" --mine --minerthreads 1 --gasprice "10000" --etherbase 0x6451cb262925d2ad23747240035f52e1a5e3f1d3 --verbosity 3 --bootnodes "enode://08622fab0c0b4f6268976eb8678ae4bc72271d726825d4a8a60034a7436ae199081294c4c35875a2ca65e8f2bfee3e7d26f727d96a39815d523b150805aff913@erver-ip:30301" 
  </code>
  Run local Geth-node:
   <code>
  geth --datadir "./localnode" --networkid 2061 --ws --wsaddr externalip --rpc --rpcaddr externalip  --rpccorsdomain "*" --wsapi "admin,db,eth,debug,miner,net,shh,txpool,personal,web3" --rpcapi "admin,db,eth,debug,miner,net,shh,txpool,personal,web3" --bootnodes "enode://08622fab0c0b4f6268976eb8678ae4bc72271d726825d4a8a60034a7436ae199081294c4c35875a2ca65e8f2bfee3e7d26f727d96a39815d523b150805aff913@serverip:30301"
  </code></p>
  
  <p><code>
  [backtrace]
  </code></p>