diff --git a/server_pool.py b/server_pool.py
index d159817..b96bfeb 100644
--- a/server_pool.py
+++ b/server_pool.py
@@ -119,12 +119,12 @@ class ServerPool(object):
 				a_config.update(user_config)
 				if len(a_config['server_ipv6']) > 2 and a_config['server_ipv6'][0] == "[" and a_config['server_ipv6'][-1] == "]":
 					a_config['server_ipv6'] = a_config['server_ipv6'][1:-1]
-				a_config['server'] = a_config['server_ipv6']
+				a_config['server'] = common.to_str(a_config['server_ipv6'])
 				a_config['server_port'] = port
 				a_config['max_connect'] = 128
 				a_config['method'] = common.to_str(a_config['method'])
 				try:
-					logging.info("starting server at [%s]:%d" % (common.to_str(a_config['server']), port))
+					logging.info("starting server at [%s]:%d" % (a_config['server'], port))
 
 					tcp_server = tcprelay.TCPRelay(a_config, self.dns_resolver, False, stat_counter=self.stat_counter)
 					tcp_server.add_to_loop(self.loop)
@@ -134,7 +134,7 @@ class ServerPool(object):
 					udp_server.add_to_loop(self.loop)
 					self.udp_ipv6_servers_pool.update({port: udp_server})
 
-					if common.to_str(a_config['server_ipv6']) == "::":
+					if a_config['server_ipv6'] == "::":
 						ipv6_ok = True
 				except Exception as e:
 					logging.warn("IPV6 %s " % (e,))
@@ -150,7 +150,7 @@ class ServerPool(object):
 				a_config['max_connect'] = 128
 				a_config['method'] = common.to_str(a_config['method'])
 				try:
-					logging.info("starting server at %s:%d" % (common.to_str(a_config['server']), port))
+					logging.info("starting server at %s:%d" % (a_config['server'], port))
 
 					tcp_server = tcprelay.TCPRelay(a_config, self.dns_resolver, False)
 					tcp_server.add_to_loop(self.loop)
diff --git a/setup_cymysql.sh b/setup_cymysql.sh
index cc1ba35..4113885 100755
--- a/setup_cymysql.sh
+++ b/setup_cymysql.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 rm -rf CyMySQL
 rm -rf cymysql
-git clone https://github.com/PyMySQL/CyMySQL.git
+git clone https://github.com/nakagami/CyMySQL.git
 mv CyMySQL/cymysql ./
 rm -rf CyMySQL
diff --git a/shadowsocks/server.py b/shadowsocks/server.py
index 0815389..9af80d7 100755
--- a/shadowsocks/server.py
+++ b/shadowsocks/server.py
@@ -120,7 +120,7 @@ def main():
                 a_config['obfs_param'] = obfs_param
                 a_config['out_bind'] = bind
                 a_config['out_bindv6'] = bindv6
-                a_config['server'] = a_config['server_ipv6']
+                a_config['server'] = common.to_str(a_config['server_ipv6'])
                 logging.info("starting server at [%s]:%d" %
                              (a_config['server'], int(port)))
                 tcp_servers.append(tcprelay.TCPRelay(a_config, dns_resolver, False, stat_counter=stat_counter_dict))