[  508.735305] netdevsim netdevsim660 eni660np1: renamed from eth1
[  508.832590] netdevsim netdevsim461 eni461np1: renamed from eth0
[  509.034228] Could not find device with ifindex 2000 in netnsfd 11
[  509.034368] Could not find netns with fd: 2000
[  509.034438] Cannot link a netdevsim to itself
[  509.034523] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).