[  521.966354] netdevsim netdevsim437 eni437np1: renamed from eth0
[  522.063641] netdevsim netdevsim703 eni703np1: renamed from eth1
[  522.306413] Could not find device with ifindex 2000 in netnsfd 11
[  522.306654] Could not find netns with fd: 2000
[  522.306765] Cannot link a netdevsim to itself
[  522.306890] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).