[  479.446491] netdevsim netdevsim416 eni416np1: renamed from eth0
[  479.547791] netdevsim netdevsim521 eni521np1: renamed from eth1
[  479.862320] Could not find device with ifindex 2000 in netnsfd 11
[  479.862456] Could not find netns with fd: 2000
[  479.862523] Cannot link a netdevsim to itself
[  479.862612] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).