Felix version 2.2.0-rc1 - Fix felix_cluster_* metrics not being updated. - Buffer the signal channel. (#1416) - Dump memory profile on receipt of SIGUSR1 (#1415) - Add support for failsafe UDP ports and allow DNS/DHCP by default. (#1412) - Rev libcalico-go to v1.2.0 for occupancy reduction. (#1419) - Move log writing to background threads to improve robustness if stdout/stderr blocks. (#1389) - Felix is now built with Go v1.8.1 (#1417). - Move conntrack rules to per-interface chains to avoid matching non-Calico packets. (#1424) - Add option to disable ctstate=INVALID rules for some corner cases/experiments. - Fix for spurious ERRORs around missing interfaces.