[  843.342591][T15772] netdevsim netdevsim501 eni501np1: renamed from eth0
[  843.357304][T15773] netdevsim netdevsim622 eni622np1: renamed from eth1
[  844.106525][T15758] Could not find device with ifindex 2000 in netnsfd 11
[  844.107679][T15758] Could not find netns with fd: 2000
[  844.108597][T15758] Cannot link a netdevsim to itself
[  844.109740][T15758] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).