Addresses issues mentioned in https://github.com/umlaeute/v4l2loopback/issues/172
Basically, it doesn't work on kernel 4.16 and probably wont work on newer and upcoming kernels either without the fix committed in (d33ea341337517daa4bfb5557bc740075212bae3) . There are 3 more commits after it namely 9fe512d406182556d0557757f38ae75810d02eed, 80c204674395e3140893fc8476263f30d5324473 and b2b33ee31d521da5069cd0683b3c0982251517b6 being the last commit.