https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268976
--- Comment #2 from rty...@brokenco.de --- Changing the `ifconfig` invocation to explicitly specify the prefixlen definitely solved the problem, e.g.: exec.start = "/sbin/ifconfig epair${id}b ${ip}/24"; While the behavior was confusing, I'm not sure what the appropriate behavior should be from FreeBSD should be in the case of a missing prefixlen. A warning or error certainly would have saved me tons of time :) -- You are receiving this mail because: You are the assignee for the bug.