[ 1269.370617][T12783] netdevsim netdevsim639 eni639np1: renamed from eth1
[ 1269.477080][T12785] netdevsim netdevsim404 eni404np1: renamed from eth0
[ 1272.055768][T12773] Could not find device with ifindex 2000 in netnsfd 11
[ 1272.056880][T12773] Could not find netns with fd: 2000
[ 1272.057712][T12773] Cannot link a netdevsim to itself
[ 1272.058809][T12773] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).