Fix IPv6 delegated prefix size in manifest
Fix IPv6 delegated prefix size in manifest

sheelarajeshkumar/hotspot_ynh,labriqueinternet/hotspot_ynh,sheelarajeshkumar/hotspot_ynh,Asphahyre/hotspot-ynh,Asphahyre/hotspot-ynh,labriqueinternet/hotspot_ynh,labriqueinternet/hotspot_ynh,sheelarajeshkumar/hotspot_ynh,Asphahyre/hotspot-ynh