[  485.816293] netdevsim netdevsim503 eni503np1: renamed from eth0
[  485.917832] netdevsim netdevsim703 eni703np1: renamed from eth1
[  486.305109] Could not find device with ifindex 2000 in netnsfd 11
[  486.305272] Could not find netns with fd: 2000
[  486.305358] Cannot link a netdevsim to itself
[  486.305478] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).