From d2dffd5be4c8f6a1942dd971d09707c3620a1689 Mon Sep 17 00:00:00 2001 From: Jon Atack Date: Fri, 30 Jul 2021 11:22:52 +0200 Subject: [PATCH] doc: add info to i2p.md about IBD time and multiple networks --- doc/i2p.md | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/doc/i2p.md b/doc/i2p.md index 27ef4d9d9f0..3a507a25abf 100644 --- a/doc/i2p.md +++ b/doc/i2p.md @@ -47,13 +47,21 @@ information in the debug log about your I2P configuration and connections. Run `bitcoin-cli help logging` for more information. It is possible to restrict outgoing connections in the usual way with -`onlynet=i2p`. I2P support was added to Bitcoin Core in version 22.0 (mid 2021) +`onlynet=i2p`. I2P support was added to Bitcoin Core in version 22.0 (mid-2021) and there may be fewer I2P peers than Tor or IP ones. Therefore, using `onlynet=i2p` alone (without other `onlynet=`) may make a node more susceptible to [Sybil attacks](https://en.bitcoin.it/wiki/Weaknesses#Sybil_attack). Use `bitcoin-cli -addrinfo` to see the number of I2P addresses known to your node. -## I2P related information in Bitcoin Core +Another consideration with `onlynet=i2p` is that the initial blocks download +phase when syncing up a new node can be very slow. This phase can be sped up by +using other networks, for instance `onlynet=onion`, at the same time. + +In general, a node can be run with both onion and I2P hidden services (or +any/all of IPv4/IPv6/onion/I2P), which can provide a potential fallback if one +of the networks has issues. + +## I2P-related information in Bitcoin Core There are several ways to see your I2P address in Bitcoin Core: - in the debug log (grep for `AddLocal`, the I2P address ends in `.b32.i2p`)