[  509.416751] netdevsim netdevsim674 eni674np1: renamed from eth1
[  509.513063] netdevsim netdevsim446 eni446np1: renamed from eth0
[  509.719823] Could not find device with ifindex 2000 in netnsfd 11
[  509.719994] Could not find netns with fd: 2000
[  509.720085] Cannot link a netdevsim to itself
[  509.720201] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).