[  538.924927] netdevsim netdevsim261 eni261np1: renamed from eth0
[  539.026379] netdevsim netdevsim602 eni602np1: renamed from eth1
[  539.417148] Could not find device with ifindex 2000 in netnsfd 11
[  539.417288] Could not find netns with fd: 2000
[  539.417360] Cannot link a netdevsim to itself
[  539.417444] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).