Oct 9 2013

Configuring MySQL Server to Permit IPv6 Connections.

MySQL server listens on a single network socket for TCP/IP connections.
This socket is bound to a single address, but it is possible for an address to map onto multiple network interfaces, also in IPv6.
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Dec 17 2012

Client-IP-Detector: a new WordPress Widget to show Client IP.

A new simple IP detector widget for WordPress (named client-ip-detector) to show if user is connecting with IPv6 or IPv4 has born and has been written by me.

Using this Plugin, IPv4 Address will be marked in RED while IPv6 ones will me marked in GREEN (this feature has to be enabled in the widget admin panel), to remember the reached availability limits of v4 Protocols.

Statistics on IPv6 and IPv4 usage (percentage) are available and can be printed-out.

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Dec 15 2011

6to4: A simple Overview.

“6to4 is an Internet transition mechanism for migrating from IPv4 to IPv6, a system that allows IPv6 packets to be transmitted over an IPv4 network (generally the IPv4 internet) without the need to configure explicit tunnels.

Special relay servers are also in place that allow 6to4 networks to communicate with native IPv6 networks.

6to4 is especially relevant during the initial phases of deployment to full, native IPv6 connectivity, since IPv6 is not required on nodes between the host and the destination. However, it is intended only as transition mechanism and is not meant to be used permanently.” (Wikipedia)
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Dec 2 2011

IPv6 Source Address Selection on Ubuntu

Have outgoing IPv6 address on an interface selected deterministically, could be desirable.
Linux will use as default the latest address added to the interface as the source address, this is generally not the optimal solution.

Linux implements RFC 3484, “Default Address Selection for Internet Protocol version 6 (IPv6)”.
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May 10 2011

IPv4 & IPv6 Prefix Reference Charts

Some paper I often use to check Prefix-Length and NetMasks.

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