I checked the Core Lightning github and multipath payments are "on" by default there too. See, for example, this issue: https://github.com/ElementsProject/lightning/issues/3926
It involved an error report where a user encountered this entry too many times in their error logs:
"Detected large payment, splitting into 100 sub-payments"
I checked the Eclair github too and multipath payments are "on" by default whenever trampoline routing is used (which is the case in Phoenix, which always uses Acinq as a trampoline node)
https://github.com/ACINQ/eclair/blob/826284cb277c28c7eef14aa275f3d6e3255c8e66/eclair-core/src/main/scala/fr/acinq/eclair/payment/send/TrampolinePaymentLifecycle.scala#L112
Super Testnet
npub1yx…c399s
2025-05-02 20:43:44
in reply to nevent1q…hjgl
Author Public Key
npub1yxp7j36cfqws7yj0hkfu2mx25308u4zua6ud22zglxp98ayhh96s8c399sPublished at
2025-05-02 20:43:44Event JSON
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"content": "I checked the Core Lightning github and multipath payments are \"on\" by default there too. See, for example, this issue: https://github.com/ElementsProject/lightning/issues/3926\n\nIt involved an error report where a user encountered this entry too many times in their error logs:\n\n\"Detected large payment, splitting into 100 sub-payments\"\n\nI checked the Eclair github too and multipath payments are \"on\" by default whenever trampoline routing is used (which is the case in Phoenix, which always uses Acinq as a trampoline node)\n\nhttps://github.com/ACINQ/eclair/blob/826284cb277c28c7eef14aa275f3d6e3255c8e66/eclair-core/src/main/scala/fr/acinq/eclair/payment/send/TrampolinePaymentLifecycle.scala#L112",
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