[  873.107082][T15863] netdevsim netdevsim503 eni503np1: renamed from eth0
[  873.134570][T15860] netdevsim netdevsim739 eni739np1: renamed from eth1
[  873.727718][T15849] Could not find device with ifindex 2000 in netnsfd 11
[  873.728363][T15849] Could not find netns with fd: 2000
[  873.728820][T15849] Cannot link a netdevsim to itself
[  873.729335][T15849] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).