# Weird stuff

## First one to get blacklisted is `0x45fd`

116152:Sep 26 07:24:22.217 DEBG Parent chain processed, result: FaultyFailure { imported_blocks: false, penalty: LowToleranceError }, chain_hash: 0x45fd…d097, service: sync, module: network::sync::block_lookups:603116152:Sep 26 07:24:22.217 DEBG Parent chain processed, result: FaultyFailure { imported_blocks: false, penalty: LowToleranceError }, chain_hash: 0x45fd…d097, service: sync, module: network::sync::block_lookups:603

## History of `0x45fd`

### 1. We have block `0x78e1`:

Sep 26 07:21:23.875 INFO New block received, root: 0x78e142eb8f5e78f31bdcc90eed84aa284e400d744bd4624b66a66ee56e40ddc7, slot: 4779405, module: network::beacon_processor::worker::gossip_methods:739
Sep 26 07:21:25.462 DEBG Fork choice updated head, old_head: 0x60ee7f93370cdc05cb4efd6b7608304ff565cb4991763e07ed6d6f86b82717da, old_head_weight: Some(605425700019002), new_head: 0x78e142eb8f5e78f31bdcc90eed84aa284e400d744bd4624b66a66ee56e40ddc7, new_head_weight: Some(173937700019002), service: beacon, module: beacon_chain::canonical_head:1065
Sep 26 07:21:29.001 DEBG Slot timer, sync_state: Synced, current_slot: 4779405, head_slot: 4779405, head_block: 0x78e1…ddc7, finalized_epoch: 149354, finalized_root: 0xc3bb…53ec, peers: 88, service: slot_notifier, module: client::notifier:174
Sep 26 07:21:29.001 INFO Synced, slot: 4779405, block: 0x78e1…ddc7, epoch: 149356, finalized_epoch: 149354, finalized_root: 0xc3bb…53ec, exec_hash: 0x7a13…2646 (verified), peers: 88, service: slot_notifier, module: client::notifier:290

### 2. We have block `0x5e06`

Sep 26 07:24:02.310 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0xebf4…0d3d, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 2, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:02.552 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x5d45…2ea6, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 3, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:02.849 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x4f84…5a4d, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 4, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:03.079 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x7290…5719, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 5, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:03.392 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0xdd8e…a64f, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 6, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:03.649 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0xa572…f54e, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 7, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:03.913 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x26e7…bd83, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 8, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:04.159 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x4292…472e, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 9, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:04.410 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0xc031…d9ea, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 10, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:04.647 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x1ce8…b266, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 11, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:04.879 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0xd644…2815, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 12, service: sync, module: network::sync::block_lookups:699

We have just requested block `0xd644` but it fails with Unknown parent `0x78e1`, Why?

Sep 26 07:24:05.117 DEBG Requesting parent, chain_hash: 0x5e06…b189, request: parent, hash: 0x78e1…ddc7, downloading_peer: 16Uiu2HAmT2w9T43bM29VkdRbqmXoy5e3wKzc3iG68TzF8p4TWp55, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 13, service: sync, module: network::sync::block_lookups:699

We receive `0x78e1` and send for processing

Sep 26 07:24:07.972 DEBG Processing parent lookup, blocks: 13, chain_hash: 0x5e06…b189, module: network::beacon_processor::worker::sync_methods:210

It succeeds and we know `0x5e06`

Sep 26 07:24:09.359 DEBG Parent chain processed, result: Success { was_non_empty: false }, chain_hash: 0x5e06…b189, service: sync, module: network::sync::block_lookups:603

But then a block referencing `0x5e06` fails

Sep 26 07:24:14.339 DEBG Rejected gossip block, slot: 4779419, graffiti: Lido ⚡️Allnodes, error: ParentUnknown(parent_root:0x5e06…b189), service: beacon, module: beacon_chain::beacon_chain:2403
Sep 26 07:24:14.354 DEBG Unknown parent for gossip block, root: 0x45fd94dd71e8d21f59782110e91b335ba64c296b8a6dcc488871f55cc511d097, module: network::beacon_processor::worker::gossip_methods:774

We start searching for the parent chain of `0x45fd` and get 4 blocks down

Sep 26 07:24:14.355 DEBG Requesting parent, chain_hash: 0x45fd…d097, request: parent, hash: 0x5e06…b189, downloading_peer: 16Uiu2HAmQXbkSnwNXPgZosAe2kdNozHWSNcKVoEetDF1vQx2sPd1, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 1, service: sync, module: network::sync::block_lookups:699
Sep 26 07:24:15.287 DEBG Requesting parent, chain_hash: 0x45fd…d097, request: parent, hash: 0x1b28…49c4, downloading_peer: 16Uiu2HAmQXbkSnwNXPgZosAe2kdNozHWSNcKVoEetDF1vQx2sPd1, failed_downloads: 0, failed_processing: 0, downloaded_blocks: 2, service: sync, module: network::sync::block_lookups:699

.. continues

# New block logs

`Sep 26 07:21:23.875 INFO New block received, root: 0x78e142eb8f5e78f31bdcc90eed84aa284e400d744bd4624b66a66ee56e40ddc7, slot: 4779405, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:21:35.993 INFO New block received, root: 0xd644f878c28a2a712fd14f27cf2a3f7ee658cc0237aeca3e7a4a01050ba52815, slot: 4779406, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:21:48.296 INFO New block received, root: 0x1ce89ddf7ea47188a55cb7f1d2ff165f46612360328e9e21b957209c2229b266, slot: 4779407, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:22:01.184 INFO New block received, root: 0xc031691d68358fff54f07bc0f31303e95a7f871985d9c9631b548e05a82ed9ea, slot: 4779408, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:22:12.268 INFO New block received, root: 0x42920e7227e684e8517cb196035df8b3908573c7f2879cac9f03d300c1f0472e, slot: 4779409, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:22:23.805 INFO New block received, root: 0x26e775718ed512d7833ef5f97adb6c57211fb7f7a4190021ba0f7c673d0ebd83, slot: 4779410, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:22:36.101 INFO New block received, root: 0xa5726f47d555f799327b56cab52bef6538d981ec4504af746082a6aaa72af54e, slot: 4779411, module: network::beacon_processor::worker::gossip_methods:739`
`Sep 26 07:22:48.215 INFO New block received, root: 0xdd8ec51a9eb69669f07a0ca7958fd8c9b55d2564e7d21f5d14a63b7efe4da64f, slot: 4779412, module: network::beacon_processor::worker::gossip_methods:739`
Note we had `0xdd8e` by 07:22

`Sep 26 07:24:02.712 INFO New RPC block received, hash: 0xe1ad…bf1c, slot: 4779393, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:24:33.232 INFO New RPC block received, hash: 0x5e06…b189, slot: 4779418, module: network::beacon_processor::worker::sync_methods:95`

And more after that
`Sep 26 07:25:39.453 INFO New RPC block received, hash: 0x760c…a596, slot: 4779420, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:26:04.642 INFO New RPC block received, hash: 0xfd8c…f70c, slot: 4779423, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:26:54.146 INFO New RPC block received, hash: 0xca6b…1dc5, slot: 4779424, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:27:02.656 INFO New RPC block received, hash: 0x242b…21f5, slot: 4779429, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:28:42.436 INFO New RPC block received, hash: 0x6061…30fe, slot: 4779430, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:30:01.206 INFO New RPC block received, hash: 0x803b…7216, slot: 4779434, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:30:28.264 INFO New RPC block received, hash: 0x671a…c8f3, slot: 4779443, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:30:44.714 INFO New RPC block received, hash: 0xf852…5edd, slot: 4779444, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:30:48.439 INFO New RPC block received, hash: 0x282f…5644, slot: 4779445, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:11.909 INFO New RPC block received, hash: 0x3657…040f, slot: 4779447, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:13.649 INFO New RPC block received, hash: 0x245d…3ee7, slot: 4779448, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:39.982 INFO New RPC block received, hash: 0x4187…a912, slot: 4779449, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:44.108 INFO New RPC block received, hash: 0x1425…3302, slot: 4779452, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:46.814 INFO New RPC block received, hash: 0x33b3…3d0f, slot: 4779453, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:31:58.455 INFO New RPC block received, hash: 0x4684…4d9b, slot: 4779454, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:32:59.762 INFO New RPC block received, hash: 0x7107…fb0b, slot: 4779455, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:33:58.802 INFO New RPC block received, hash: 0x0c08…db21, slot: 4779458, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:34:18.380 INFO New RPC block received, hash: 0x216b…c1bc, slot: 4779462, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:35:30.029 INFO New RPC block received, hash: 0xa833…8a6d, slot: 4779464, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:35:36.214 INFO New RPC block received, hash: 0x89cc…c695, slot: 4779467, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:35:51.684 INFO New RPC block received, hash: 0x356a…5ed3, slot: 4779470, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:36:37.368 INFO New RPC block received, hash: 0x07b0…1917, slot: 4779473, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:37:03.396 INFO New RPC block received, hash: 0x5b5d…a42a, slot: 4779477, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:37:35.689 INFO New RPC block received, hash: 0x7fc5…9468, slot: 4779478, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:37:39.547 INFO New RPC block received, hash: 0x4a06…1092, slot: 4779480, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:37:42.124 INFO New RPC block received, hash: 0x2360…c5c6, slot: 4779481, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:38:33.752 INFO New RPC block received, hash: 0x450b…7e3a, slot: 4779482, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:39:42.896 INFO New RPC block received, hash: 0xe842…5f73, slot: 4779487, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:40:03.504 INFO New RPC block received, hash: 0xe431…0a6e, slot: 4779492, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:40:09.454 INFO New RPC block received, hash: 0x26bb…5687, slot: 4779495, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:40:52.979 INFO New RPC block received, hash: 0xfe86…8996, slot: 4779496, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:41:15.496 INFO New RPC block received, hash: 0x8653…65a7, slot: 4779498, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:41:40.003 INFO New RPC block received, hash: 0x10e4…fb06, slot: 4779501, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:41:41.419 INFO New RPC block received, hash: 0x9c87…cef2, slot: 4779502, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:41:54.368 INFO New RPC block received, hash: 0xc300…572b, slot: 4779503, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:42:04.965 INFO New RPC block received, hash: 0x0408…cfeb, slot: 4779504, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:43:06.109 INFO New RPC block received, hash: 0x9a3d…85e7, slot: 4779505, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:43:49.113 INFO New RPC block received, hash: 0x2b68…2682, slot: 4779510, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:43:55.528 INFO New RPC block received, hash: 0xdb2c…688c, slot: 4779511, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:44:24.517 INFO New RPC block received, hash: 0x5f7e…27a8, slot: 4779512, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:45:08.182 INFO New RPC block received, hash: 0x8dcb…e17b, slot: 4779515, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:47:24.204 INFO New RPC block received, hash: 0xa390…af1c, slot: 4779520, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:47:31.381 INFO New RPC block received, hash: 0x1eb5…c12a, slot: 4779524, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:48:31.348 INFO New RPC block received, hash: 0x7a7e…d2cf, slot: 4779528, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:48:42.878 INFO New RPC block received, hash: 0x5b7b…d3b6, slot: 4779534, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:48:59.711 INFO New RPC block received, hash: 0x39a8…7c6b, slot: 4779538, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:49:13.445 INFO New RPC block received, hash: 0xdefd…e177, slot: 4779539, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:50:47.300 INFO New RPC block received, hash: 0x6889…2fd3, slot: 4779540, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:51:00.638 INFO New RPC block received, hash: 0xa2e9…7320, slot: 4779545, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:51:21.099 INFO New RPC block received, hash: 0xaa82…8ed9, slot: 4779547, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:51:54.690 INFO New RPC block received, hash: 0x566e…999c, slot: 4779550, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:52:05.053 INFO New RPC block received, hash: 0xb5ac…3de3, slot: 4779551, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:52:29.131 INFO New RPC block received, hash: 0x73fd…c131, slot: 4779554, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:52:41.779 INFO New RPC block received, hash: 0x1474…e148, slot: 4779556, module: network::beacon_processor::worker::sync_methods:95`
`Sep 26 07:52:44.011 INFO New RPC block received, hash: 0xb998…4162, slot: 4779557, module: network::beacon_processor::worker::sync_methods:95`