[  481.955762] netdevsim netdevsim483 eni483np1: renamed from eth0
[  482.057425] netdevsim netdevsim621 eni621np1: renamed from eth1
[  482.423393] Could not find device with ifindex 2000 in netnsfd 11
[  482.423573] Could not find netns with fd: 2000
[  482.423690] Cannot link a netdevsim to itself
[  482.423818] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).