[ 1251.971681][T13051] netdevsim netdevsim638 eni638np1: renamed from eth1
[ 1252.056007][T13054] netdevsim netdevsim267 eni267np1: renamed from eth0
[ 1254.631653][T13041] Could not find device with ifindex 2000 in netnsfd 11
[ 1254.633396][T13041] Could not find netns with fd: 2000
[ 1254.634816][T13041] Cannot link a netdevsim to itself
[ 1254.636635][T13041] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).