Initial support for creating interfaces through "ip link" from iproute2 #24
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TL;DR - tiny rework of simple patch[1], that somehow is not included in netifrc yet
Works like a charm and remove burden of messing with preup() and postdown()
Unfortunately, there is not easy way to determine if this link interface was created manually from iproute2 or given by system itself(it is easy with tunnels though as it's separate command), so, as a precaution, only "tested" tunnels were added for now(gretap and vxlan)
[1] - https://gist.github.com/josephglanville/2757336