Probe firmware version 4030

• We're in the process of rolling out a new firmware version. It enables a new feature that has been asked by members of the community: static network configuration. Using the UI, one can ask the probe to try to use static IPv4/IPv6 addresses (and DNS resolvers). If these settings don't work, the probes will fall back to using DHCP. As a byproduct, this feature also allows IPv6-only deployments.