DDND

hi everybody
i want to ask about DDNS(Dynamic Domain name System). i am working in company and connecting other company branchs with mikrotiks routers. in our topology we have 3 ISPs and we support internet to our branches.
i am working in our company website which is need public ip. this ip changes when am change to one of the 3 ISPs. i think to handle this problem is to use DDNS in my mikrotik routers in form of script. i was find ddns script in the wiki but i dont understand how to apply it and what is the requirements i need. so would you help me to solve this problem?


regards
badour

v6.4 allows you to use domain names instead of IP in pptp, sstp, l2tp, openvpn