try first opkg update then retry
blindscan you can download it
sf8008 login: root
root@sf8008:~# opkg update
Downloading http://downloads.openpli.org/f…hf-neon-vfpv4/Packages.gz.
Updated source 'openpli-3rd-party-cortexa15hf-neon-vfpv4'.
Downloading http://downloads.openpli.org/f…ase/3rd-party/Packages.gz.
Updated source 'openpli-3rd-party'.
Downloading http://downloads.openpli.org/f…-party-sf8008/Packages.gz.
wget: server returned error: HTTP/1.1 404 Not Found
Downloading http://download.wanwizard.eu/f…i-develop/all/Packages.gz.
wget: bad address 'download.wanwizard.eu'
Downloading http://download.wanwizard.eu/f…hf-neon-vfpv4/Packages.gz.
wget: bad address 'download.wanwizard.eu'
Downloading http://downloads.openpli.org/f…elease/picons/Packages.gz.
Updated source 'openpli-picons'.
Downloading http://download.wanwizard.eu/f…evelop/sf8008/Packages.gz.
wget: bad address 'download.wanwizard.eu'
Collected errors:
* opkg_download_backend: Failed to download http://downloads.openpli.org/f…-party-sf8008/Packages.gz, wget returned 1.
* opkg_download_backend: Failed to download http://download.wanwizard.eu/f…i-develop/all/Packages.gz, wget returned 1.
* opkg_download_backend: Failed to download http://download.wanwizard.eu/f…hf-neon-vfpv4/Packages.gz, wget returned 1.
* opkg_download_backend: Failed to download http://download.wanwizard.eu/f…evelop/sf8008/Packages.gz, wget returned 1.
i need openvpn plugin but feeds are off