[  522.148160] netdevsim netdevsim516 eni516np1: renamed from eth1
[  522.245614] netdevsim netdevsim459 eni459np1: renamed from eth0
[  522.498255] Could not find device with ifindex 2000 in netnsfd 11
[  522.498475] Could not find netns with fd: 2000
[  522.498567] Cannot link a netdevsim to itself
[  522.498691] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).