[  522.736536] netdevsim netdevsim519 eni519np1: renamed from eth1
[  522.834515] netdevsim netdevsim270 eni270np1: renamed from eth0
[  523.076572] Could not find device with ifindex 2000 in netnsfd 11
[  523.076773] Could not find netns with fd: 2000
[  523.076866] Cannot link a netdevsim to itself
[  523.076987] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).