[ 1271.695747][T12851] netdevsim netdevsim531 eni531np1: renamed from eth1
[ 1271.700011][T12849] netdevsim netdevsim319 eni319np1: renamed from eth0
[ 1274.276254][T12837] Could not find device with ifindex 2000 in netnsfd 11
[ 1274.279351][T12837] Could not find netns with fd: 2000
[ 1274.280737][T12837] Cannot link a netdevsim to itself
[ 1274.296003][T12837] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).