There are solutions for this issue, but I haven't found working one for my phone.
The problem is that MAC address of WiFi changes last three pairs of hex numbers every time i restart WiFi. Because of that, I face troubles with configuring router: DHCP reservation for example.
Android version 4.2.2
kernel version 3.4.5
Phone is rooted.
MAC changer apps, at least popular ones, do not help.
Have anyone some ideas?