[ 1250.443541][T12791] netdevsim netdevsim500 eni500np1: renamed from eth0
[ 1250.515397][T12790] netdevsim netdevsim550 eni550np1: renamed from eth1
[ 1253.175151][T12780] Could not find device with ifindex 2000 in netnsfd 11
[ 1253.176443][T12780] Could not find netns with fd: 2000
[ 1253.177404][T12780] Cannot link a netdevsim to itself
[ 1253.178525][T12780] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).