Android devices sometimes use wrong DNS server

Android devices sometimes use wrong DNS server. My assumption is, that it happens when device finds friendly WiFi access point, disconnects from mobile provider/ISP and is just finished connecting to it (WiFi using DHCP). It has setup DNS servers from WiFi, however, it still sends requests to DNS from mobile ISP via WiFi network. It …

Did you know that IP addresses (IPv4) can be written in shorter representations?

Did you know that IPv4 addresses can be written in shorter representations, like IPv6 addresses? Everyone have seen form of IPv6 represented as “shorter form”: Example from IPv6: 2001::7334 ::1 :: You can use our free tool ipv6-literal.com to convert these addresses to long form. The result is: 2001:0000:0000:0000:0000:0000:0000:7334 0000:0000:0000:0000:0000:0000:0000:0001 0000:0000:0000:0000:0000:0000:0000:0000 What admins / programmers …

PowerShell in Unicode, Windows 8 RP and Windows Server 2012 RC

I was testing our software with latest version of Microsoft Windows — Windows 8 Release Preview and Windows Server 2012 Release Candidate (Windows Server 2012 RC Datacenter). There was some changed behavior in very specific cases for some rarely used Windows API. I also found some race conditions, that showed up in Windows 8, but …