[  999.483375][T12118] netdevsim netdevsim505 eni505np1: renamed from eth0
[  999.578971][T12059] netdevsim netdevsim683 eni683np1: renamed from eth1
[ 1001.300443][T12442] Could not find device with ifindex 2000 in netnsfd 11
[ 1001.301976][T12442] Could not find netns with fd: 2000
[ 1001.303106][T12442] Cannot link a netdevsim to itself
[ 1001.304467][T12442] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).