Sure!
This is for the AR300M, firmware version 2.27.
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Install wget first. (I get installation errors otherwise)
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Install luci-app-adblock
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Using the luci interface, go to Services | Adblock
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Click Enable Adblock.
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Down this page there are a number of block lists. Pick those that you need. Then keep scrolling to the bottom of the page.
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Enable force local DNS.
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Disable force optional sort. It has little effect and slows down updates.
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Click Save and Apply.
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It’s going to take some time to download and process the lists, then ad blocking will be available to all connected clients.
That’s it!
I would need a version of wget with SSL on the B1300 to be able to use adblock on it.