[ 1245.877721][T12747] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1245.882512][T12748] netdevsim netdevsim766 eni766np1: renamed from eth1
[ 1248.620241][T12734] Could not find device with ifindex 2000 in netnsfd 11
[ 1248.623232][T12734] Could not find netns with fd: 2000
[ 1248.624127][T12734] Cannot link a netdevsim to itself
[ 1248.625272][T12734] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).