java

I been using Netbeans and following solved the problem: manticore:/etc/sysctl.d# telnet ::ffff:192.168.1.1 Trying ::ffff:192.168.1.1... telnet: Unable to connect to remote host: Network is unreachable manticore:/etc/sysctl.d# sysctl net.ipv6.bindv6only net.ipv6.bindv6only = 1 manticore:/etc/sysctl.d# sysctl net.ipv6.bindv6only=0 net.ipv6.bindv6only = 0 manticore:/etc/sysctl.d# telnet ::ffff:192.168.1.1 Trying ::ffff:192.168.1.1... Connected to ::ffff:192.168.1.1. Escape character is '^]'.