[  472.696819] netdevsim netdevsim537 eni537np1: renamed from eth1
[  472.697014] netdevsim netdevsim265 eni265np1: renamed from eth0
[  472.772036] Could not find device with ifindex 2000 in netnsfd 11
[  472.772184] Could not find netns with fd: 2000
[  472.772291] Cannot link a netdevsim to itself
[  472.772408] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).