Don't add official Ethereum bootnodes as required peers

CHANGELOG.md

@@ -18,6 +18,7 @@
 - Changed: [#5589](https://github.com/ethereum/aleth/pull/5589) Make aleth output always line-buffered even when redirected to file or pipe.
 - Changed: [#5602](https://github.com/ethereum/aleth/pull/5602) Better predicting external IP address and UDP port.
 - Changed: [#5605](https://github.com/ethereum/aleth/pull/5605) Network logging bugfixes and improvements and add warpcap log channel.
+- Changed: [#5628](https://github.com/ethereum/aleth/pull/5628) Don't try to endlessly reconnect to official Ethereum bootnodes.
 - Fixed: [#5562](https://github.com/ethereum/aleth/pull/5562) Don't send header request messages to peers that haven't sent us Status yet.
 - Fixed: [#5581](https://github.com/ethereum/aleth/pull/5581) Fixed finding neighbour nodes in Discovery.
 - Fixed: [#5599](https://github.com/ethereum/aleth/pull/5600) Prevent aleth from attempting concurrent connection to node which results in disconnect of original connection.

aleth/main.cpp

@@ -1011,7 +1011,7 @@ int main(int argc, char** argv)
 
         if (bootstrap)
             for (auto const& i : defaultBootNodes())
-                web3.requirePeer(i.first, i.second);
+                web3.addNode(i.first, i.second);
         if (!remoteHost.empty())
             web3.addNode(p2p::NodeID(), remoteHost + ":" + toString(remotePort));
     }