[ 1245.687980][T12775] netdevsim netdevsim621 eni621np1: renamed from eth1
[ 1245.700175][T12778] netdevsim netdevsim363 eni363np1: renamed from eth0
[ 1248.377903][T12770] Could not find device with ifindex 2000 in netnsfd 11
[ 1248.379094][T12770] Could not find netns with fd: 2000
[ 1248.380026][T12770] Cannot link a netdevsim to itself
[ 1248.381253][T12770] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).