Wartungsmodus per htaccess

RewriteEngine On
RewriteCond %{REQUEST_URI} !wartung.html$
# IP-Adresse Entwickler
RewriteCond %{REMOTE_ADDR} !^111\.111\.111\.111$
# Webserver
RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.1$
# Wartungsseite
RewriteRule (.*) /wartung.html [R,L]