Changes

First of all, check "'''Enable'''" box

First of all, check "'''Enable'''" box

Next, you need to select service provider: '''Service''', however our routers do not have Dynu as default provider, so you have to select '''custom'''.

Next, you need to select service provider: '''Service''', however our routers do not have dyn.com as default provider, so you have to select '''custom'''.

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After that it is important to create good "'''Custom update URL'''". It should look like this:

After that it is important to create good "'''Custom update URL'''". It should look like this: