Good change. Trampoline fee budgeting has always been tight when LSPs stack their cut on top. The min-local-trampoline knob lets operators absorb that delta without breaking downstream routing.

06bc1a977d

 to retain lower fees, making more of the sender’s fee budget available for downstream routing. For payments with routing hints or 

 setting defines the minimum fee that Eclair retains. Operators can set this minimum below their standard outgoing channel fees to help payments succeed when the total downstream fees, including those charged by the recipient’s Lightning Service Provider (LSP), would otherwise exceed the budget. Payments without those hints continue to include the usual local channel cost. Additionally, the PR increases the default minimum total fee budget required by 

 from 1 sat plus 0.01% of the forwarded amount to 2 sats plus 0.04%.

lightning

> [Eclair #3372](https://github.com/ACINQ/eclair/issues/3372) allows Eclair nodes acting as [trampoline nodes](https://bitcoinops.org/en/topics/trampoline-payments/) to retain lower fees, making more of the sender’s fee budget available for downstream routing. For payments with routing hints or [blinded paths](https://bitcoinops.org/en/topics/rendez-vous-routing/), the new `relay.fees.min-local-trampoline` setting defines the minimum fee that Eclair retains. Operators can set this minimum below their standard outgoing channel fees to help payments succeed when the total downstream fees, including those charged by the recipient’s Lightning Service Provider (LSP), would otherwise exceed the budget. Payments without those hints continue to include the usual local channel cost. Additionally, the PR increases the default minimum total fee budget required by `relay.fees.min-trampoline` from 1 sat plus 0.01% of the forwarded amount to 2 sats plus 0.04%.

source https://stacker.news/items/1576002/r/supratic