802.11ac and 100 Mbps ports

If you find 802.11ac wireless routers which equip with 100 Mbps ports either in the LAN or WAN side, don't buy. This is a rubbish design.

Use an app instead of a calculator

When working on radio propagation distances, I need to convert between miles and kilometers. What comes to my mind is not a calculator. It is about downloading an app. Shit, what a useless person I am on this planet.

IPv6 privacy extension

Law enforcement agencies say they can track IPv6 devices or computers. They are wrong absolutely. PCs and smartphones have built-in "privacy extension" to prevent the last 64 bits being tracked.

Gparted live CD

I needed to change the file system of a hard disk from ext3 to NTFS for use by Windows.  Intuitively, I thought in a Linux envionment, it would involve the steps of fdisk /dev/sda1, delete partitions, create new primary partition, write on partition table, mkfs ntfs /dev/sda1.   All the command line  steps are not necessary. Just use Gparted live CD, (Gnome Partition Editor) after boot up, two clicks in the GUI can accomplish the  tasks.  There are other good functions such as resizing partitions and copy partition for the sake of image-backup. A geat discovery.  Nice to share in this personal blog.