revert pow removal

cmd/devp2p/README.md

@@ -108,32 +108,31 @@ Start the test by running `devp2p discv5 test -listen1 127.0.0.1 -listen2 127.0.
 
 The Eth Protocol test suite is a conformance test suite for the [eth protocol][eth].
 
-To run the eth protocol test suite against your implementation, the node needs to be initialized
-with our test chain. The chain files are located in `./cmd/devp2p/internal/ethtest/testdata`.
-
-1. initialize the geth node with the `genesis.json` file
-2. import blocks from `chain.rlp`
-3. run the client using the resulting database. For geth, use a command like the one below:
-
-    geth \
-        --datadir <datadir>            \
-        --nodiscover                   \
-        --nat=none                     \
-        --networkid 3503995874084926   \
-        --verbosity 5                  \
-        --authrpc.jwtsecret 0x7365637265747365637265747365637265747365637265747365637265747365
-
-Note that the tests also require access to the engine API.
-The test suite can now be executed using the devp2p tool.
-
-    devp2p rlpx eth-test \
-        --chain internal/ethtest/testdata   \
-        --node enode://....                 \
-        --engineapi http://127.0.0.1:8551   \
-        --jwtsecret 0x7365637265747365637265747365637265747365637265747365637265747365
+To run the eth protocol test suite against your implementation, the node needs to be initialized as such:
+
+1. initialize the geth node with the `genesis.json` file contained in the `testdata` directory
+2. import the `halfchain.rlp` file in the `testdata` directory
+3. run geth with the following flags:
+```
+geth --datadir <datadir> --nodiscover --nat=none --networkid 19763 --verbosity 5
+```
+
+Then, run the following command, replacing `<enode>` with the enode of the geth node:
+ ```
+ devp2p rlpx eth-test <enode> cmd/devp2p/internal/ethtest/testdata/chain.rlp cmd/devp2p/internal/ethtest/testdata/genesis.json
+```
 
 Repeat the above process (re-initialising the node) in order to run the Eth Protocol test suite again.
 
+#### Eth66 Test Suite
+
+The Eth66 test suite is also a conformance test suite for the eth 66 protocol version specifically.
+To run the eth66 protocol test suite, initialize a geth node as described above and run the following command,
+replacing `<enode>` with the enode of the geth node:
+
+ ```
+ devp2p rlpx eth66-test <enode> cmd/devp2p/internal/ethtest/testdata/chain.rlp cmd/devp2p/internal/ethtest/testdata/genesis.json
+```
 
 [eth]: https://github.com/ethereum/devp2p/blob/master/caps/eth.md
 [dns-tutorial]: https://geth.ethereum.org/docs/developers/geth-developer/dns-discovery-setup