[  493.794864] netdevsim netdevsim400 eni400np1: renamed from eth0
[  493.889979] netdevsim netdevsim739 eni739np1: renamed from eth1
[  494.131292] Could not find device with ifindex 2000 in netnsfd 11
[  494.131643] Could not find netns with fd: 2000
[  494.131732] Cannot link a netdevsim to itself
[  494.131827] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).