[  511.916934] netdevsim netdevsim398 eni398np1: renamed from eth0
[  512.014058] netdevsim netdevsim763 eni763np1: renamed from eth1
[  512.227006] Could not find device with ifindex 2000 in netnsfd 11
[  512.227180] Could not find netns with fd: 2000
[  512.227258] Cannot link a netdevsim to itself
[  512.227351] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).