[  510.833873] netdevsim netdevsim750 eni750np1: renamed from eth1
[  510.931051] netdevsim netdevsim356 eni356np1: renamed from eth0
[  511.188399] Could not find device with ifindex 2000 in netnsfd 11
[  511.188597] Could not find netns with fd: 2000
[  511.188686] Cannot link a netdevsim to itself
[  511.188795] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).