VestaCP - Ошибка при переносе на новый IP - nginx: emerg bind() to :80 failed (99: Cannot assign requested address)

Ошибки вида:

# /etc/init.d/nginx restart
nginx: [emerg] bind() to 5.6.2.6:80 failed (99: Cannot assign requested address)
nginx: configuration file /etc/nginx/nginx.conf test failed

# /etc/init.d/httpd restart
Stopping httpd:                                            [FAILED]
Starting httpd: [Tue Jan 12 12:15:41 2016] [warn] NameVirtualHost 5.6.2.6:8080 has no VirtualHosts
[Tue Jan 12 12:15:41 2016] [warn] NameVirtualHost 5.6.2.6:8443 has no VirtualHosts
[Tue Jan 12 12:15:41 2016] [warn] NameVirtualHost 5.6.2.15:8443 has no VirtualHosts
(99)Cannot assign requested address: make_sock: could not bind to address 5.6.2.6:8080
no listening sockets available, shutting down
Unable to open logs
                                                          [FAILED]

могут возникнуть при переносе доменов на новый IP. Нужно проверить перенос по пунктам:

1) Добавить новый IP в VestaCP --> IP по адресу
https://ip:8083/list/ip/

2) Поменять IP для WEB доменов в VestaCP: 
https://ip:8083/list/web/

3) Удалить старые конфиги Apache/nginx если они есть:
  # rm -rf /etc/nginx/conf.d/5.6.2.15.conf
  #  rm -rf /etc/httpd/conf.d/5.6.2.15.conf

4) Перезапустить nginx && apache:
  # /etc/init.d/nginx restart
  # /etc/init.d/httpd restart