[ 1240.892702][T12613] netdevsim netdevsim381 eni381np1: renamed from eth0
[ 1241.034957][T12612] netdevsim netdevsim621 eni621np1: renamed from eth1
[ 1243.532093][T12605] Could not find device with ifindex 2000 in netnsfd 11
[ 1243.533778][T12605] Could not find netns with fd: 2000
[ 1243.534862][T12605] Cannot link a netdevsim to itself
[ 1243.536209][T12605] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).