[  868.780284][T16001] netdevsim netdevsim390 eni390np1: renamed from eth0
[  868.801928][T16003] netdevsim netdevsim520 eni520np1: renamed from eth1
[  869.696539][T15988] Could not find device with ifindex 2000 in netnsfd 11
[  869.697564][T15988] Could not find netns with fd: 2000
[  869.698758][T15988] Cannot link a netdevsim to itself
[  869.699727][T15988] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).