Ethereum Mist connect with local private network - ethereum

Question

System information
Geth Version: 1.7.3-stable
Git Commit: 4bb3c89d44e372e6a9ab85a8be0c9345265c763a
Operating System: linux
Expected behaviour
Connect Mist with local private network
Actual behaviour
I type command :
geth --datadir ~/private_network init ~/private_network/genesis.json
geth --datadir ~/private_network --networkid 3131 --ipcpath ~/private_network/geth.ipc console 2>~/private_network/console.log
and I run Mist but I have an error "address already in use" even if I kill processes that uses port 30303 I have the same result
Backtrace
~/.ethereum/testnet/geth/ethash count=3
INFO [12-16|12:05:37] Disk storage enabled for ethash DAGs dir=~/.ethash count=2
INFO [12-16|12:05:37] Initialising Ethereum protocol versions="[63 62]" network=3
INFO [12-16|12:05:37] Loaded most recent local header number=797369 hash=81c88e…3044c5 td=587702682055345
INFO [12-16|12:05:37] Loaded most recent local full block number=0 hash=419410…ca4a2d td=1048576
INFO [12-16|12:05:37] Loaded most recent local fast block number=761870 hash=08735b…e597b9 td=571350456833753
INFO [12-16|12:05:37] Loaded local transaction journal transactions=0 dropped=0
INFO [12-16|12:05:37] Upgrading chain index type=bloombits percentage=79
INFO [12-16|12:05:37] Regenerated local transaction journal transactions=0 accounts=0
INFO [12-16|12:05:37] Starting P2P networking
Fatal: Error starting protocol stack: listen udp :30303: bind: address already in use

Answer 1

You're connecting to the Ropsten network (network=3). You have to pass in your network id into Mist using the --network option and provide the path to your .ipc file using --rpc.
$ ./Mist.exe --network 3131 --rpc ~/private_network/geth.ipc
Full command line options:
$ ./Mist.exe --help
Usage: Mist.exe --help [Mist options] [Node options]
Mist options:
--mode, -m App UI mode: wallet, mist. [string] [default: "mist"]
--node Node to use: geth, eth [string] [default: null]
--network Network to connect to: main, test
[string] [default: null]
--rpc Path to node IPC socket file OR HTTP RPC hostport (if
IPC socket file then --node-ipcpath will be set with
this value). [string]
--swarmurl URL serving the Swarm HTTP API. If null, Mist will
open a local node.
[string] [default: "http://localhost:8500"]
--gethpath Path to Geth executable to use instead of default.
[string]
--ethpath Path to Eth executable to use instead of default.
[string]
--ignore-gpu-blacklist Ignores GPU blacklist (needed for some Linux
installations). [boolean]
--reset-tabs Reset Mist tabs to their default settings. [boolean]
--logfile Logs will be written to this file in addition to the
console. [string]
--loglevel Minimum logging threshold: info, debug, error, trace
(shows all logs, including possible passwords over
IPC!). [string] [default: "info"]
--syncmode Geth synchronization mode: [fast|light|full] [string]
--version, -v Display Mist version. [boolean]
--skiptimesynccheck Disable checks for the presence of automatic time sync
on your OS. [boolean]
Node options:
- To pass options to the underlying node (e.g. Geth) use the --node- prefix,
e.g. --node-datadir
Options:
-h, --help Show help [boolean]