[  523.383564] netdevsim netdevsim337 eni337np1: renamed from eth0
[  523.480528] netdevsim netdevsim758 eni758np1: renamed from eth1
[  523.729923] Could not find device with ifindex 2000 in netnsfd 11
[  523.730149] Could not find netns with fd: 2000
[  523.730257] Cannot link a netdevsim to itself
[  523.730385] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).