tunnel over IPv6 fails (IPv4 working fine)

[AceScottie]

Having some issues with sshtunnel failing to connect when using IPv6. Tested IPv4 working fine.

Error: 08-10-2020,(+0100),23:33:49, sql.create_connection failed
An error occurred while opening tunnels., <class 'sshtunnel.HandlerSSHTunnelForwarderError'>, An error occurred while opening tunnels.,   File "C:\Users\Me\Desktop\patient\SP.py", line 523, in create_connection
  File "C:\Users\Me\Desktop\patient\tunnel.py", line 29, in secure_sql
  File "C:\Python38\lib\site-packages\sshtunnel.py", line 1313, in start
  File "C:\Python38\lib\site-packages\sshtunnel.py", line 1100, in _raise

code:

import sshtunnel
import pymysql
import socket 
class ssh_tunnel:
	def __init__(self, add, passwd, user, port, sql, db, ipv):
		if ipv == 4:
			self.add = add
			self.lba = "127.0.0.1"
		elif ipv == 6:
			self.add = add
			self.lba = "::1"
		self.db = db # sql database name
		self.pw = passwd # sql and ssh password
		self.user = user # sql and ssh username
		self.port = port # ssh port
		self.sqlport = sql # sql port
		self.get_open_port()
		self.server = self.gen_connection()
	def get_open_port(self):
		s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
		s.bind(('', 0))
		addr = s.getsockname()
		self.open_port = addr[1]
		s.close()
	def gen_connection(self):
		return sshtunnel.open_tunnel((self.add, self.port), ssh_username=self.user, ssh_password=self.pw, remote_bind_address=(self.add, self.sqlport), local_bind_address=(self.lba, self.open_port))
	def secure_sql(self):
		self.server.start()
		return pymysql.connect(host="localhost", port=self.server.local_bind_port, user=self.user, passwd=self.pw, db=self.db, charset='utf8',  cursorclass=pymysql.cursors.DictCursor)

[pahaz]

could you please provide a reproducible example?
We also have some new release 0.2.0 with ipv6 support. Could you please try to check it?
could you please run your code with sshtunnel.open_tunnel( ..., debug_level=1)