Imagine this scenario – at a restaurant you need to have a private phone conversation but unfortunately phone’s battery is drained. To get around this problem, borrow a friend’s phone and dial the number – to protect my privacy I…
TCP Fast Open (TFO) is an extension to speed up the opening of successive Transmission Control Protocol (TCP) connections between two endpoints. It works by using a TFO cookie (a TCP option), which is a cryptographic cookie stored on the client and set upon the initial connection…
Some fresh benchmarks over the past day on PHP 5.5.38, PHP 5.6.38, PHP 7.0.32, PHP 7.1.24, PHP 7.2.13, and the PHP 7.3.0 release. PHP 7.3 is just shy of 10% faster than PHP 7.2 in the popular PHPBench. PHP 7.3…
Today most popular storage engine in latests MySQL databases is InnoDB. But if you have older databases, before the times when InnoDB becomes the king, you must somehow convert your data. You can easy find which tables are using an…
On large zpools ZFS ARC memory occupies whole free ram on the machine and it starts swapping. It looks like that something is wrong and it needs some tuning. Good results are archived after founding ZFS sysctl tunable vfs.zfs.arc_free_target to define how much…
The goal of this new editor is to make adding rich content to WordPress simple and enjoyable. This whole post is composed of pieces of content—somewhat similar to LEGO bricks—that you can move around and interact with. Move your cursor…
Interesting article here.
In case someone else encounters the same issue, it turns out that net-snmp-config –cflags is responsible for the -std=c99 flag. Disabling SNMP support with –without-net-snmp can be used as a workaround for now.
Source – The expected [code language=“plain“]ip dhcp pool host.net.example.com option 119 ascii net.example.com,example.com[/code] doesn’t work. So you need to encode search domains in hex using following example script written in Python: [code language=“python“]#!/usr/bin/env python import syshexlist = []for domain…
Removed Features named can no longer use the EDNS CLIENT-SUBNET option for view selection. In its existing form, the authoritative ECS feature was not fully RFC-compliant, and could not realistically have been deployed in production for an authoritative server; its…