[  511.576884] netdevsim netdevsim741 eni741np1: renamed from eth1
[  511.674256] netdevsim netdevsim407 eni407np1: renamed from eth0
[  511.889062] Could not find device with ifindex 2000 in netnsfd 11
[  511.889240] Could not find netns with fd: 2000
[  511.889334] Cannot link a netdevsim to itself
[  511.889457] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).