[ 6357.203083] Running test [R:12688998 T:30 - Networking tunnel: permtest - Kernel: 5.15.71-rt51] 
[ 6357.602478] tun: Universal TUN/TAP device driver, 1.6 
[ 6357.942701] IPv6: ADDRCONF(NETDEV_CHANGE): tun_a: link becomes ready 
[ 6357.956164] IPv6: ADDRCONF(NETDEV_CHANGE): tap_a: link becomes ready