After some time using TrueOS without any problems, suddendly when I connect to any wireless network, my system picks up some old DNS servers from a connection I made 2 montths ago.
I saw a line
supersede domain-name-servers 22.214.171.124;
in the file /etc/dhclient.conf and removed it, but even with a clean and empty /etc/dhclient.conf the system insists in using 126.96.36.199 as DNS for any connection.
I have searched 188.8.131.52 in every file in /etc and is nowhere. I cannot imagine how dhcp picks this address for the DNS.
I remember having the same problem with PCBSD some years ago that only went away after a re-install.
So the queestion is, how is possible that my system picks up this address for the DNS.