Same as T257035.
1.1.8 changelog: https://github.com/pavel-odintsov/fastnetmon/releases/tag/v1.1.8
1.1.9 changelog: https://github.com/pavel-odintsov/fastnetmon/releases/tag/v1.1.9
1.2.0 changelog: https://github.com/pavel-odintsov/fastnetmon/releases/tag/v1.2.0
1.2.1 changelog: https://github.com/pavel-odintsov/fastnetmon/releases/tag/v1.2.1
Most notable is the addition of v6 support and performance improvements.
Nothing of direct interest for us in 1.2.1