[  523.630190] netdevsim netdevsim301 eni301np1: renamed from eth0
[  523.727863] netdevsim netdevsim756 eni756np1: renamed from eth1
[  523.995110] Could not find device with ifindex 2000 in netnsfd 11
[  523.995328] Could not find netns with fd: 2000
[  523.995426] Cannot link a netdevsim to itself
[  523.995540] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).