[  475.232561] netdevsim netdevsim309 eni309np1: renamed from eth0
[  475.233475] netdevsim netdevsim688 eni688np1: renamed from eth1
[  475.317046] Could not find device with ifindex 2000 in netnsfd 11
[  475.317148] Could not find netns with fd: 2000
[  475.317193] Cannot link a netdevsim to itself
[  475.317243] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).