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When nodes are syncing but have not yet reached the canonical `head`, they cannot determine whether nodes they are connected to serve a valid history or are making bogus claims in their `Status` advertisement. Thus, the best course of action that a client can take is to vote for its "current" best synced head, regardless of whether it's connected to peers that claim to have other heads or not. However, in the p2p spec, we penalize such peers with a `REJECT` - this should be an `IGNORE` instead because this vote is correct per the spec, albeit "late" according to the validating clients' view of the chain.