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282 sats \ 2 replies \ @nullcount 4 Dec \ parent \ on: Why Should I Have a Bitcoin Core Full Node If I'm Not a Miner? bitcoin_beginners
You can set a static IP on your LAN, but that does not necessarily mean that IP is publicly accessible.
To be maximally helpful for "the network", your node needs to broadcast an IP that anyone can connect.
Most residential Internet service does not include a public IP, rather your router is behind a carrier grade NAT, meaning you cannot forward ports.
Additionally, many Internet plans have data caps that make it "expensive" to sync a node from genesis quickly, let alone seed blocks to others.
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0 sats \ 1 reply \ @0xbitcoiner OP 4 Dec
Oh! I wasn't talking about a static ip on a local network but on a public network (aka internet :)).
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32 sats \ 0 replies \ @nullcount 4 Dec
If you don't have a static IP but are still able to forward ports using a dynamic IP, then, when your IP changes, all connections will be dropped. Your node will reopen all outgoing connections using your new IP address. Unfortunately incoming connections will not be reopened and any remote nodes will have to wait for your node's new external IP address to be advertised again by your peers.
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