This sync includes a new service flag named SFNodeBloom that a node is
required to use to indicate that it supports bloom filtering. This
includes a protocol version bump to 2 and a wire version bump to 0.1.0.
dcrd:
The SFNodeBloom flag is set by default. A new configuration option
--nopeerbloomfilters has been added to to disable bloom filtering.
Also, it corrects an issue with the mining state message where it was
using the network protocol version instead of having its own version.