Use package relay for anchor force-close #2963
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We use bitcoin core's
submitpackage
RPC to publish commit txs with their anchor transaction. We do this for both local and remote commit txs, and prefer the remote commit when it is available.Thanks to opportunistic package relay (added in
bitcoind
v28), this allows the commit and anchor package to propagate even if the commit feerate is below the mempool minimum feerate, as long as enough nodes run bitcoin core v28 or higher.