[  812.730649][T14632] netdevsim netdevsim403 eni403np1: renamed from eth0
[  812.754372][T14634] netdevsim netdevsim721 eni721np1: renamed from eth1
[  813.452684][T14620] Could not find device with ifindex 2000 in netnsfd 11
[  813.453770][T14620] Could not find netns with fd: 2000
[  813.454519][T14620] Cannot link a netdevsim to itself
[  813.455375][T14620] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).