[  516.723197] netdevsim netdevsim683 eni683np1: renamed from eth1
[  516.820721] netdevsim netdevsim503 eni503np1: renamed from eth0
[  517.010777] Could not find device with ifindex 2000 in netnsfd 11
[  517.010958] Could not find netns with fd: 2000
[  517.011052] Cannot link a netdevsim to itself
[  517.011177] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).