Sorted:

problem about netcat-Collection of common programming errors

problem about ndp-Collection of common programming errors

problem about nat-Collection of common programming errors

problem about mesh-Collection of common programming errors

problem about icmpv6-Collection of common programming errors

problem about gnutls-Collection of common programming errors

IPTables and transparent proxies-Collection of common programming errors

Karmic iptables missing kernel moduyles on OpenVZ container-Collection of common programming errors

Getting Fatal Error Uncaught CurlException: 26: couldn't open file-Collection of common programming errors

Error when restarting postfix-Collection of common programming errors