[  485.131699] netdevsim netdevsim619 eni619np1: renamed from eth1
[  485.228731] netdevsim netdevsim436 eni436np1: renamed from eth0
[  485.430539] Could not find device with ifindex 2000 in netnsfd 11
[  485.430853] Could not find netns with fd: 2000
[  485.430968] Cannot link a netdevsim to itself
[  485.431114] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).