[  783.129411][T14741] netdevsim netdevsim257 eni257np1: renamed from eth0
[  783.151204][T14742] netdevsim netdevsim687 eni687np1: renamed from eth1
[  783.746420][T14729] Could not find device with ifindex 2000 in netnsfd 11
[  783.746988][T14729] Could not find netns with fd: 2000
[  783.747406][T14729] Cannot link a netdevsim to itself
[  783.747851][T14729] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).