I'm having an issue that is driving me a little nuts.
Every time I do a power management event with any of my Parallel's virtual machines, such as standby, resume, power off, poweron, etc, little snitch prompts me to allow one if it's helper processes "prl_natpd" to connect to an IP address. It's always the same IP address.
When the prompt comes up, if I select "allow forever" and press OK then it immediately re prompts me for the same process to connect to the same address. It's as if the "allow forever" box really means "deny until reprompted". If I select "allow once" then little snitch allows the connection until the next time.
I additionally have an "Allow any connection forever on any port, protocol, etc" for the process. The process is owned by system and has a valid code signature. I have deleted and re-created the rule a few times, however that has not resolved the issue.
Does anyone have a suggestion as to how to resolve this?
The same prompt happens over Wifi, Ethernet, and also when tethered via my iPhone. There is only one user account logged into the Mac (although a separate "presentation mode" account with limited access exists for when my Mac is on a podium in a public space).
MacBook Pro (Retina, 13-inch, Mid 2014)/ 16GB RAM/ Mac OS 10.12.4/ Little Snitch 4.0.2(5086) / Parallels Desktop 12.2.1(41615)