[  512.666239] netdevsim netdevsim490 eni490np1: renamed from eth0
[  512.768297] netdevsim netdevsim659 eni659np1: renamed from eth1
[  513.120062] Could not find device with ifindex 2000 in netnsfd 11
[  513.120232] Could not find netns with fd: 2000
[  513.120329] Cannot link a netdevsim to itself
[  513.120453] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).