[  486.345556] netdevsim netdevsim355 eni355np1: renamed from eth0
[  486.345993] netdevsim netdevsim531 eni531np1: renamed from eth1
[  486.445494] Could not find device with ifindex 2000 in netnsfd 11
[  486.445595] Could not find netns with fd: 2000
[  486.445648] Cannot link a netdevsim to itself
[  486.445711] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).