求助：ubuntu系统单线改双线后报错？

244159303

原来用单线时ip:66.145.126.12,apache2里sites-enabled/000-default 是这样配置的，重启后没问题。
NameVirtualHost 66.145.126.12
<VirtualHost 66.145.126.12>
Servername 66.145.126.12
<Location />
  Order Allow,Deny
  Deny from all
</Location>
</VirtualHost>
<VirtualHost 66.145.126.12>
  ServerName www.yyyy.com
  ServerAdmin webmaster@localhost
  #DocumentRoot /var/www/BackUp/WFBackup/var/www/www/
  DocumentRoot /var/www/www/
  #<FilesMatch "\.(mp3|rmvb|flv|mpg|wmv)">
  <FilesMatch "\.(txt|svn|doc|mp3|rar|zip|rmvb|flv|mpg|wmv)">
  Order Deny,Allow
  Deny from all
  </FilesMatch>
  SetEnvIfNoCase Referer "^http://www.yyyy.com/" local_ref=1
  SetEnvIfNoCase Referer "^http://www.yyyy.cn/" local_ref=1
  <filesmatch "\.(pdf)">
  Order Allow,Deny
  Allow from env=local_ref
  </filesmatch>
  #<Location />
  # Order Allow,Deny
  # Deny from all
  #</Location>
  <Directory />
  Options FollowSymLinks
  AllowOverride All
  #AllowOverride None
  </Directory>
  <Directory /var/www/www/>
  Options Indexes FollowSymLinks MultiViews
  AllowOverride All
  Order Deny,Allow
  #Order allow,deny
  Deny from 219.226.91.82
  #allow from all
  </Directory>

  ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
  <Directory "/usr/lib/cgi-bin">
  AllowOverride All
  Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
  Order allow,deny
  Allow from all
  </Directory>

  ErrorLog /var/log/apache2/error.log

  # Possible values include: debug, info, notice, warn, error, crit,
  # alert, emerg.
  LogLevel warn

  CustomLog /var/log/apache2/access.log combined

  Alias /doc/ "/usr/share/doc/"
  <Directory "/usr/share/doc/">
  Options Indexes MultiViews FollowSymLinks
  AllowOverride All
  Order deny,allow
  Deny from all
  Allow from 127.0.0.0/255.0.0.0 ::1/128
  </Directory>

ErrorDocument 404 http://www.yyyy.com
ErrorDocument 403 http://www.yyyy.com
</VirtualHost>

改成双线后，ip变成二个，电信：183.63.19.16；联通：58.249.60.66，我在apache2配置文件sites-enabled/000-default里都改成localhost,重启后报错。
改成localhost后如下：

NameVirtualHost localhost
<VirtualHost localhost>
Servername localhost
<Location />
  Order Allow,Deny
  Deny from all
</Location>
</VirtualHost>
<VirtualHost localhost>
  ServerName www.yyyy.com
  ServerAdmin webmaster@localhost  
  #DocumentRoot /var/www/BackUp/WFBackup/var/www/www/
  DocumentRoot /var/www/www/
  #<FilesMatch "\.(mp3|rmvb|flv|mpg|wmv)">
  <FilesMatch "\.(txt|svn|doc|mp3|rar|zip|rmvb|flv|mpg|wmv)">
  Order Deny,Allow
  Deny from all
  </FilesMatch>
  SetEnvIfNoCase Referer "^http://www.yyyy.com/" local_ref=1  
  SetEnvIfNoCase Referer "^http://www.yyyy.cn/" local_ref=1  
  <filesmatch "\.(pdf)">  
  Order Allow,Deny  
  Allow from env=local_ref  
  </filesmatch>
  #<Location />
  # Order Allow,Deny
  # Deny from all
  #</Location>
  <Directory />
  Options FollowSymLinks
  AllowOverride All
  #AllowOverride None
  </Directory>
  <Directory /var/www/www/>
  Options Indexes FollowSymLinks MultiViews
  AllowOverride All
  Order Deny,Allow
  #Order allow,deny
  Deny from 219.226.91.82
  #allow from all
  </Directory>

  ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
  <Directory "/usr/lib/cgi-bin">
  AllowOverride All
  Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
  Order allow,deny
  Allow from all
  </Directory>

  ErrorLog /var/log/apache2/error.log

  # Possible values include: debug, info, notice, warn, error, crit,
  # alert, emerg.
  LogLevel warn

  CustomLog /var/log/apache2/access.log combined

  Alias /doc/ "/usr/share/doc/"
  <Directory "/usr/share/doc/">
  Options Indexes MultiViews FollowSymLinks
  AllowOverride All
  Order deny,allow
  Deny from all
  Allow from 127.0.0.0/255.0.0.0 ::1/128
  </Directory>

ErrorDocument 404 http://www.yyyy.com
ErrorDocument 403 http://www.yyyy.com
</VirtualHost>

重启后报错：root@freedom:/etc/apache2/sites-available# /etc/init.d/apache2 start
* Starting web server apache2
[Wed Mar 14 10:36:03 2012] [warn] VirtualHost 66.145.126.12:0 overlaps with VirtualHost 66.145.126.12:0, the first has precedence, perhaps you need a NameVirtualHost directive
[Wed Mar 14 10:36:03 2012] [warn] VirtualHost 66.145.126.12:0 overlaps with VirtualHost 66.145.126.12:0, the first has precedence, perhaps you need a NameVirtualHost directive
[Wed Mar 14 10:36:03 2012] [warn] VirtualHost 66.145.126.12:0 overlaps with VirtualHost 66.145.126.12:0, the first has precedence, perhaps you need a NameVirtualHost directive
[Wed Mar 14 10:36:03 2012] [warn] VirtualHost 66.145.126.12:0 overlaps with VirtualHost 66.145.126.12:0, the first has precedence, perhaps you need a NameVirtualHost directive
[Wed Mar 14 10:36:03 2012] [warn] NameVirtualHost localhost:0 has no VirtualHosts
  ...done.