[ 1044.726292][T12479] netdevsim netdevsim521 eni521np1: renamed from eth1
[ 1044.835345][T12480] netdevsim netdevsim459 eni459np1: renamed from eth0
[ 1046.674099][T12472] Could not find device with ifindex 2000 in netnsfd 11
[ 1046.675089][T12472] Could not find netns with fd: 2000
[ 1046.675833][T12472] Cannot link a netdevsim to itself
[ 1046.676631][T12472] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).