[  487.632998] netdevsim netdevsim617 eni617np1: renamed from eth1
[  487.734505] netdevsim netdevsim270 eni270np1: renamed from eth0
[  488.080712] Could not find device with ifindex 2000 in netnsfd 11
[  488.080844] Could not find netns with fd: 2000
[  488.080930] Cannot link a netdevsim to itself
[  488.081022] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).