[  526.696873] netdevsim netdevsim336 eni336np1: renamed from eth0
[  526.793554] netdevsim netdevsim756 eni756np1: renamed from eth1
[  527.031697] Could not find device with ifindex 2000 in netnsfd 11
[  527.031941] Could not find netns with fd: 2000
[  527.032051] Cannot link a netdevsim to itself
[  527.032187] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).