Hello everyone, I'm playing a bit with Packer in order to produce a base box for Vagrant. Everything works quite fine except today I reached the parallels-iso: Error detecting host IP: IP not found in ifconfig output error message. I found that the culprit is my Ethernet connection. When I connect using WiFi everything works fine. I took a quick look at the source code https://github.com/hashicorp/packer...lder/parallels/common/host_ip_ifconfig.go#L12 and it looks like there's some regular expression magic going on. Unfortunately I'm not proficient in Golang therefore I don't understand it and hence I cannot deduce what is the original intent behind the IP lookup. Is here somebody who is able to shed a bit of light to me what's going on? Thanks in advance, PETR Further investigation: I found that the Packer provider looks for multiple interfaces: https://github.com/hashicorp/packer...fac076e/builder/parallels/iso/builder.go#L144 Unfortunately my LAN interface is en16 which is out of bounds. The WiFi interface is en0. I'm attaching two outputs of ifconfig illustrating the difference in the IP configuration when only LAN is connected and both LAN and WiFi is up.