Add localhost vs 127.0.0.1 info in FAQ and connections docs

[nirvikpurkait]

Prerequisites

• I have written a descriptive issue title

Mongoose version

7.2.2

Node.js version

18.12.1

MongoDB version

6.0.4

Operating system

Windows

Operating system version (i.e. 20.04, 11.3, 10)

11

Issue

I can connect to mongoDB with 127.0.0.1:27017 and localhost:27017 both, with the help of mongoDB Compass, when I am trying to connect to the same with the help of mongoose, for localhost:27017 it is showing error message like, ECONNREFUSED ::1:27017, but in case if I try to connect with 127.0.0.1:27017, it connects.

N.B: I have checked my host mapping for my system, everything is mapped correctly.

[silentjohnny]

Node 18.x connects to IPv6 address ::1 instead of IPv4 127.0.0.1 when using localhost:27017.
Your MongoDB server needs to listen to IPv6 connections, please consider the following entry in your mongod.conf:

net:
  port: 27017
  bindIp: localhost
  ipv6: true

[IslandRhythms]

@vkarpov15 should we add this to the FAQ?

[nirvikpurkait]

Node 18.x connects to IPv6 address ::1 instead of IPv4 127.0.0.1 when using localhost:27017. Your MongoDB server needs to listen to IPv6 connections, please consider the following entry in your mongod.conf:

net:
  port: 27017
  bindIp: localhost
  ipv6: true

It didn't worked initially, but after making the changes to config file, needed to restart the MongoDB server from services.