[  512.664164] netdevsim netdevsim321 eni321np1: renamed from eth0
[  512.760928] netdevsim netdevsim549 eni549np1: renamed from eth1
[  512.985313] Could not find device with ifindex 2000 in netnsfd 11
[  512.985487] Could not find netns with fd: 2000
[  512.985579] Cannot link a netdevsim to itself
[  512.985686] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).