• Verified with grootfs-release v0.19.0

Various things and oh yeah GUARDIAN RUNS (EXPERIMENTALLY) ON WINDOWS NOW.

Major Things

• Allows specifying a maximum tcp kernel memory limit for containers.
• Allow specifying a runtime_plugin other than the default (runc)
• Beginnings of support for running on windows

Highlighted Minor Fixes

• Avoid doing unnecessary DNS lookups at startup
• Ensure MTU is never set defaulted higher than 1500, even if the MTU of the external interface happens to be higher than that (see cloudfoundry/guardian#77)
• Don't explode on restart when -1 was specified as ICMP rule type (see #30)