[  520.345999] netdevsim netdevsim462 eni462np1: renamed from eth0
[  520.443217] netdevsim netdevsim744 eni744np1: renamed from eth1
[  520.698277] Could not find device with ifindex 2000 in netnsfd 11
[  520.698442] Could not find netns with fd: 2000
[  520.698526] Cannot link a netdevsim to itself
[  520.698622] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).