I have an ONT G-240W-C connected in PPPoE I wanted to connect in my OpenWrt which is ahead

Installing and Using OpenWrt
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Second test, gave this

tcpdump: listening on wan, link-type EN10MB (Ethernet), capture size 262144 bytes
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Nothing is answering on the 10.2.2.1 address on that interface. If you connect your pc with static IP and mask on the same ont port, does it respond?

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It works as follows. I connect a cable on port 2 of my router and another on the ONT port and use the ONT interface with the ont.10 VLAN, that's how it works. However, I wanted to use 1 single cable

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Can anyone help?