error gem

➜  ~ sudo gem install jekyll rdoc --debug -V
Password:
NOTE:  Debugging mode prints all exceptions even when rescued
Exception `LoadError' at /usr/lib64/ruby/2.2.0/resolv.rb:168 - LoadError
Exception `Errno::EHOSTUNREACH' at /usr/lib64/ruby/2.2.0/resolv.rb:810 - No route to host - recvfrom(2)
ERROR:  While executing gem ... (Errno::EHOSTUNREACH)
    No route to host - recvfrom(2)
        /usr/lib64/ruby/2.2.0/resolv.rb:810:in `recv'
        /usr/lib64/ruby/2.2.0/resolv.rb:810:in `recv_reply'
        /usr/lib64/ruby/2.2.0/resolv.rb:690:in `request'
        /usr/lib64/ruby/2.2.0/resolv.rb:528:in `block in fetch_resource'
        /usr/lib64/ruby/2.2.0/resolv.rb:1096:in `block (3 levels) in resolv'
        /usr/lib64/ruby/2.2.0/resolv.rb:1094:in `each'
        /usr/lib64/ruby/2.2.0/resolv.rb:1094:in `block (2 levels) in resolv'
        /usr/lib64/ruby/2.2.0/resolv.rb:1093:in `each'
        /usr/lib64/ruby/2.2.0/resolv.rb:1093:in `block in resolv'
        /usr/lib64/ruby/2.2.0/resolv.rb:1091:in `each'
        /usr/lib64/ruby/2.2.0/resolv.rb:1091:in `resolv'
        /usr/lib64/ruby/2.2.0/resolv.rb:519:in `fetch_resource'
        /usr/lib64/ruby/2.2.0/resolv.rb:509:in `each_resource'
        /usr/lib64/ruby/2.2.0/resolv.rb:490:in `getresource'
        /usr/lib64/ruby/2.2.0/rubygems/remote_fetcher.rb:92:in `api_endpoint'
        /usr/lib64/ruby/2.2.0/rubygems/source.rb:46:in `api_uri'
        /usr/lib64/ruby/2.2.0/rubygems/source.rb:85:in `dependency_resolver_set'
        /usr/lib64/ruby/2.2.0/rubygems/resolver/best_set.rb:23:in `block in pick_sets'
        /usr/lib64/ruby/2.2.0/rubygems/source_list.rb:97:in `each'
        /usr/lib64/ruby/2.2.0/rubygems/source_list.rb:97:in `each_source'
        /usr/lib64/ruby/2.2.0/rubygems/resolver/best_set.rb:22:in `pick_sets'
        /usr/lib64/ruby/2.2.0/rubygems/resolver/best_set.rb:28:in `find_all'
        /usr/lib64/ruby/2.2.0/rubygems/resolver/installer_set.rb:151:in `find_all'
        /usr/lib64/ruby/2.2.0/rubygems/resolver/installer_set.rb:54:in `add_always_install'
        /usr/lib64/ruby/2.2.0/rubygems/dependency_installer.rb:463:in `resolve_dependencies'
        /usr/lib64/ruby/2.2.0/rubygems/commands/install_command.rb:238:in `install_gem'
        /usr/lib64/ruby/2.2.0/rubygems/commands/install_command.rb:299:in `block in install_gems'
        /usr/lib64/ruby/2.2.0/rubygems/commands/install_command.rb:295:in `each'
        /usr/lib64/ruby/2.2.0/rubygems/commands/install_command.rb:295:in `install_gems'
        /usr/lib64/ruby/2.2.0/rubygems/commands/install_command.rb:202:in `execute'
        /usr/lib64/ruby/2.2.0/rubygems/command.rb:307:in `invoke_with_build_args'
        /usr/lib64/ruby/2.2.0/rubygems/command_manager.rb:168:in `process_args'
        /usr/lib64/ruby/2.2.0/rubygems/command_manager.rb:138:in `run'
        /usr/lib64/ruby/2.2.0/rubygems/gem_runner.rb:54:in `run'
        /usr/bin/gem:21:in `<main>'