[  527.469803] netdevsim netdevsim637 eni637np1: renamed from eth1
[  527.567227] netdevsim netdevsim367 eni367np1: renamed from eth0
[  527.799327] Could not find device with ifindex 2000 in netnsfd 11
[  527.799505] Could not find netns with fd: 2000
[  527.799606] Cannot link a netdevsim to itself
[  527.799710] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).