[  487.593241] netdevsim netdevsim630 eni630np1: renamed from eth1
[  487.689454] netdevsim netdevsim405 eni405np1: renamed from eth0
[  487.896912] Could not find device with ifindex 2000 in netnsfd 11
[  487.897180] Could not find netns with fd: 2000
[  487.897269] Cannot link a netdevsim to itself
[  487.897391] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).