p2p: lowered log lvl for failed enr request

[MatusKysel]

Description

resolves #2857

Rationale

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Example

add an example CLI or API response...

Changes

Notable changes:

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[zzzckck]

approved, but one question:
"loopback address from non-loopback host": it is a network error about the loopback address(IP pattern: x.x.x.127), why it is triggered so frequently in QA env?

[MatusKysel]

approved, but one question: "loopback address from non-loopback host": it is a network error about the loopback address(IP pattern: x.x.x.127), why it is triggered so frequently in QA env?

Hey, I think it due to our QA, we have maybe wrong config there. Where nodes will pick up external IP of the machine but as it's running on (same machine ?) some close env response is from loop back 127.... just different port probably. We could try to fix the config but as it's not effecting anything it's not worth of time