Should networkID and chainID be different?

[Jonas1024]

What happened?

let httpProvider = try await Web3HttpProvider(url: URL(string: url)!, network: nil, keystoreManager: keystoreManager)
self.web3 = Web3(provider: httpProvider)

When I created WEB3, the network field was empty and the url was my locally deployed server.

Later, the NetworkID was requested through this method.

let response: String = try await APIRequest.send(APIRequest.getNetwork.call, parameters: [], with: self).result

Some methods require chainID, but return networkID

    public var chainID: BigUInt {
        switch self {
        case .Custom(let networkID): return networkID
        case .Mainnet: return BigUInt(1)
        case .Ropsten: return BigUInt(3)
        case .Rinkeby: return BigUInt(4)
        case .Goerli: return BigUInt(5)
        case .Kovan: return BigUInt(42)
        }
    }

What are the steps to reproduce?

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What is the expected behavior?

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What is the error thrown?

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What's the stack trace said?

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OS version

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Library version

3.2.1