[  521.909262] netdevsim netdevsim279 eni279np1: renamed from eth0
[  522.005380] netdevsim netdevsim520 eni520np1: renamed from eth1
[  522.261422] Could not find device with ifindex 2000 in netnsfd 11
[  522.261699] Could not find netns with fd: 2000
[  522.261802] Cannot link a netdevsim to itself
[  522.261917] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).