cross-posted from: https://lemmy.world/post/21511762
The most notable changes:
- bitcoind used to listen on
127.0.0.1:8334 by default. If you use Tor for incoming connections, you have to manually specify bind=127.0.0.1:8334=onion in config
- unix sockets can now be used to communicate with Tor or other proxy, and MQ traffic.
- New mempool policies has been implemented to patch some attack vectors for chains of unconfirmed transactions, especially in relation to lightning network channels and similar contracts.
- TRUC (Topologically Restricted Until Confirmation, BIP 431) can now be used with transaction version 3 (now considered standard) instead of RBF.
- Full RBF (Replace By Fee) is now enabled by default
- RHEL 8 and Ubuntu 18.04 are now unsupported due to minimum required glibc version bump.