diff --git a/gluon/packages/dal b/gluon/packages/dal
index 0dc5befb..50f8dafd 160000
--- a/gluon/packages/dal
+++ b/gluon/packages/dal
@@ -1 +1 @@
-Subproject commit 0dc5befbe5d63adc6493b0600ed1ef8642ac6693
+Subproject commit 50f8dafdff6f04a3f5edce7807aef89a32ff516f
diff --git a/gluon/validators.py b/gluon/validators.py
index 2afeedc4..10dc5b7f 100644
--- a/gluon/validators.py
+++ b/gluon/validators.py
@@ -3482,7 +3482,7 @@ class IS_IPV6(Validator):
             from gluon.contrib import ipaddr as ipaddress
 
         try:
-            ip = ipaddress.IPv6Address(value)
+            ip = ipaddress.IPv6Address(value.decode('utf-8'))
             ok = True
         except ipaddress.AddressValueError:
             return (value, translate(self.error_message))
@@ -3494,7 +3494,7 @@ class IS_IPV6(Validator):
                 self.subnets = [self.subnets]
             for network in self.subnets:
                 try:
-                    ipnet = ipaddress.IPv6Network(network)
+                    ipnet = ipaddress.IPv6Network(network.decode('utf-8'))
                 except (ipaddress.NetmaskValueError, ipaddress.AddressValueError):
                     return (value, translate('invalid subnet provided'))
                 if ip in ipnet:
@@ -3703,20 +3703,22 @@ class IS_IPADDRESS(Validator):
 
     def __call__(self, value):
         try:
-            import ipaddress
+            from ipaddress import ip_address as IPAddress
+            from ipaddress import IPv6Address, IPv4Address
         except ImportError:
-            from gluon.contrib import ipaddr as ipaddress
+            from gluon.contrib.ipaddr import (IPAddress, IPv4Address,
+                                              IPv6Address)
 
         try:
-            ip = ipaddress.IPAddress(value)
-        except ValueError, e:
+            ip = IPAddress(value.decode('utf-8'))
+        except ValueError:
             return (value, translate(self.error_message))
 
-        if self.is_ipv4 and isinstance(ip, ipaddress.IPv6Address):
+        if self.is_ipv4 and isinstance(ip, IPv6Address):
             retval = (value, translate(self.error_message))
-        elif self.is_ipv6 and isinstance(ip, ipaddress.IPv4Address):
+        elif self.is_ipv6 and isinstance(ip, IPv4Address):
             retval = (value, translate(self.error_message))
-        elif self.is_ipv4 or isinstance(ip, ipaddress.IPv4Address):
+        elif self.is_ipv4 or isinstance(ip, IPv4Address):
             retval = IS_IPV4(
                 minip=self.minip,
                 maxip=self.maxip,
@@ -3726,7 +3728,7 @@ class IS_IPADDRESS(Validator):
                 is_automatic=self.is_automatic,
                 error_message=self.error_message
                 )(value)
-        elif self.is_ipv6 or isinstance(ip, ipaddress.IPv6Address):
+        elif self.is_ipv6 or isinstance(ip, IPv6Address):
             retval = IS_IPV6(
                 is_private=self.is_private,
                 is_link_local=self.is_link_local,
diff --git a/scripts/setup-web2py-nginx-uwsgi-centos7.sh b/scripts/setup-web2py-nginx-uwsgi-centos7.sh
new file mode 100644
index 00000000..a6b62152
--- /dev/null
+++ b/scripts/setup-web2py-nginx-uwsgi-centos7.sh
@@ -0,0 +1,235 @@
+#!/bin/bash
+
+# This script will install web2py with nginx+uwsgi on centos 7
+# This script is based on excellent tutorial by Justin Ellingwood on 
+# https://www.digitalocean.com/community/tutorials/how-to-deploy-web2py-python-applications-with-uwsgi-and-nginx-on-centos-7
+
+#
+# Phase 1: First, let's ask a few things
+#
+
+read -p "Enter username under which web2py will be installed [web2py]: " USERNAME
+USERNAME=${USERNAME:-web2py}
+
+read -p "Enter path where web2py will be installed [/opt/web2py_apps]: " WEB2PY_PATH
+WEB2PY_PATH=${WEB2PY_PATH:-/opt/web2py_apps}
+
+read -p "Web2py subdirectory will be called: [web2py]: " WEB2PY_APP
+WEB2PY_APP=${WEB2PY_APP:-web2py}
+
+read -p "Enter your web2py admin password: " WEB2PY_PASS
+
+read -p "Enter your domain name: " YOUR_SERVER_DOMAIN
+
+#  open new user
+useradd -d $WEB2PY_PATH $USERNAME
+
+# if it's not already open, let's create a directory for web2py
+mkdir -p $WEB2PY_PATH
+
+# now let's create a self signed certificate
+cd $WEB2PY_PATH
+
+openssl req -x509 -new -newkey rsa:4096 -days 3652 -nodes -keyout $WEB2PY_APP.key -out $WEB2PY_APP.crt
+
+#
+# phase 2: That was all the input that we needed so let's install the components
+#
+
+echo "Installing necessary components"
+
+# Verify packages are up to date
+yum -y upgrade
+
+# Install required packages
+yum install -y epel-release
+yum install -y python-devel python-pip gcc nginx wget unzip python-psycopg2 MySQL-python
+
+# download and unzip web2py
+
+echo "Downloading web2py"
+
+cd $WEB2PY_PATH
+wget http://web2py.com/examples/static/web2py_src.zip
+unzip web2py_src.zip
+rm web2py_src.zip
+
+# preparing wsgihandler
+chown -R $USERNAME.$USERNAME $WEB2PY_PATH/$WEB2PY_APP
+mv $WEB2PY_PATH/$WEB2PY_APP/handlers/wsgihandler.py $WEB2PY_PATH/$WEB2PY_APP
+
+# now let's install uwsgi
+
+pip install uwsgi
+
+# preparing directories
+mkdir -p /etc/uwsgi/sites
+mkdir -p /var/log/uwsgi
+mkdir -p /etc/nginx/ssl/
+
+#
+#  Phase 3: Ok, everything is installed now so we'll configure things
+#
+
+# Create configuration file for uwsgi in /etc/uwsgi/$WEB2PY_APP.ini
+echo '[uwsgi]
+chdir = WEB2PY_PATH_PLACEHOLDER/WEB2PY_APP_PLACEHOLDER
+module = wsgihandler:application
+
+master = true
+processes = 5
+
+uid = USERNAME_PLACEHOLDER
+socket = /run/uwsgi/WEB2PY_APP_PLACEHOLDER.sock
+chown-socket = USERNAME_PLACEHOLDER:nginx
+chmod-socket = 660
+vacuum = true
+' >/etc/uwsgi/sites/$WEB2PY_APP.ini
+
+sed -i "s@WEB2PY_PATH_PLACEHOLDER@$WEB2PY_PATH@" /etc/uwsgi/sites/$WEB2PY_APP.ini
+sed -i "s@WEB2PY_APP_PLACEHOLDER@$WEB2PY_APP@" /etc/uwsgi/sites/$WEB2PY_APP.ini
+sed -i "s@USERNAME_PLACEHOLDER@$USERNAME@" /etc/uwsgi/sites/$WEB2PY_APP.ini
+
+# Create a daemon configuration file for uwsgi
+cat  > /etc/systemd/system/uwsgi.service <<EOF
+[Unit]
+Description=uWSGI Emperor service
+
+[Service]
+ExecStartPre=/usr/bin/bash -c 'mkdir -p /run/uwsgi; chown USERNAME_PLACEHOLDER:nginx /run/uwsgi'
+ExecStart=/usr/bin/uwsgi --emperor /etc/uwsgi/sites
+Restart=always
+KillSignal=SIGQUIT
+Type=notify
+NotifyAccess=all
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+sed -i "s@USERNAME_PLACEHOLDER@$USERNAME@" /etc/systemd/system/uwsgi.service
+
+#chmod 777 /etc/systemd/system/uwsgi.service
+
+# create a nginx configuration file
+cat  > /etc/nginx/nginx.conf <<EOF
+# For more information on configuration, see:
+#   * Official English Documentation: http://nginx.org/en/docs/
+#   * Official Russian Documentation: http://nginx.org/ru/docs/
+
+user nginx;
+worker_processes auto;
+error_log /var/log/nginx/error.log;
+pid /run/nginx.pid;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    log_format  main  '\$remote_addr - \$remote_user [\$time_local] "\$request" '
+                      '\$status \$body_bytes_sent "\$http_referer" '
+                      '"\$http_user_agent" "\$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile            on;
+    tcp_nopush          on;
+    tcp_nodelay         on;
+    keepalive_timeout   65;
+    types_hash_max_size 2048;
+
+    include             /etc/nginx/mime.types;
+    default_type        application/octet-stream;
+
+    # Load modular configuration files from the /etc/nginx/conf.d directory.
+    # See http://nginx.org/en/docs/ngx_core_module.html#include
+    # for more information.
+    include /etc/nginx/conf.d/*.conf;
+
+    server {
+        listen       80 default_server;
+        listen       [::]:80 default_server;
+        server_name  YOUR_SERVER_DOMAIN_PLACEHOLDER;
+        root         /usr/share/nginx/html;
+
+        # Load configuration files for the default server block.
+        include /etc/nginx/default.d/*.conf;
+
+        location ~* /(\w+)/static/ {
+            root WEB2PY_PATH_PLACEHOLDER/WEB2PY_APP_PLACEHOLDER/applications/;
+        }
+
+        location / {
+            include uwsgi_params;
+            uwsgi_pass unix:/run/uwsgi/WEB2PY_APP_PLACEHOLDER.sock;
+        }
+
+        error_page 404 /404.html;
+            location = /40x.html {
+        }
+
+        error_page 500 502 503 504 /50x.html;
+            location = /50x.html {
+        }
+    }
+    
+    server {
+        listen 443;
+        server_name YOUR_SERVER_DOMAIN_PLACEHOLDER;
+        
+        ssl on;
+        ssl_certificate /etc/nginx/ssl/WEB2PY_APP_PLACEHOLDER.crt;
+        ssl_certificate_key /etc/nginx/ssl/WEB2PY_APP_PLACEHOLDER.key;
+        
+        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
+        ssl_ciphers "HIGH:!aNULL:!MD5 or HIGH:!aNULL:!MD5:!3DES";
+        ssl_prefer_server_ciphers on;
+        
+        location / {
+            include uwsgi_params;
+            uwsgi_pass unix:/run/uwsgi/WEB2PY_APP_PLACEHOLDER.sock;
+        }
+    }
+}
+EOF
+
+sed -i "s@YOUR_SERVER_DOMAIN_PLACEHOLDER@$YOUR_SERVER_DOMAIN@" /etc/nginx/nginx.conf
+sed -i "s@WEB2PY_PATH_PLACEHOLDER@$WEB2PY_PATH@" /etc/nginx/nginx.conf
+sed -i "s@WEB2PY_APP_PLACEHOLDER@$WEB2PY_APP@" /etc/nginx/nginx.conf
+
+#
+# Phase 4: everything is configured now, just a few final touches
+#
+
+# copying certificates to nginx directory
+mv $WEB2PY_PATH/$WEB2PY_APP.crt* /etc/nginx/ssl
+mv $WEB2PY_PATH/$WEB2PY_APP.key* /etc/nginx/ssl
+
+# creating web2py admin password
+cd $WEB2PY_PATH/$WEB2PY_APP
+python -c "from gluon.main import save_password; save_password('$WEB2PY_PASS',443)"
+chown -R $USERNAME.$USERNAME $WEB2PY_PATH/$WEB2PY_APP
+
+# taking care of permissions
+chmod 700 /etc/nginx/ssl
+usermod -a -G $USERNAME nginx
+chmod 710 $WEB2PY_PATH
+
+# enabling daemons
+systemctl start nginx
+systemctl start uwsgi
+systemctl enable nginx
+systemctl enable uwsgi
+
+# If firewall is active make sure these ports are open
+
+firewall-cmd --zone=public --add-port=80/tcp --permanent
+firewall-cmd --zone=public --add-port=443/tcp --permanent
+firewall-cmd --zone=public --add-port=22/tcp --permanent
+firewall-cmd --reload
+
+echo
+echo 'Web2py is now installed on this server!'
+echo
+
diff --git a/scripts/setup-web2py-ubuntu.sh b/scripts/setup-web2py-ubuntu.sh
index 4ce86474..01682d1a 100644
--- a/scripts/setup-web2py-ubuntu.sh
+++ b/scripts/setup-web2py-ubuntu.sh
@@ -1,7 +1,7 @@
 echo "This script will:
 1) install all modules need to run web2py on Ubuntu 14.04
 2) install web2py in /home/www-data/
-3) create a self signed sll certificate
+3) create a self signed ssl certificate
 4) setup web2py with mod_wsgi
 5) overwrite /etc/apache2/sites-available/default
 6) restart apache.