Hi, I am using upstream kernel 4.11.0 and base is RHEL 7.2. I am playing around with TAP devices and created it using following commands ======= ip tuntap add tap10 mode tap ip addr add 172.28.12.1/24 dev tap10 ip link set tap10 up ethtool -s tap10 msglvl 1 =======
I enabled debug in driver and also added some prints in tun_net_xmit function. I tried to ping using tap10 but I don’t see request reaching driver. I also tried to create a bridge using brctl and link with physical ethernet interface but it didn’t work. Second experiment I did was to create two tap device on same system and try pinging one from another, that also didn’t worked. I have following queries 1) Is I am missing something? 2) Is is possible to hook my own tx/rx to that tap device, so that data packets actually goes on wire? 3) Does DHCP works with tap devices? Thanks, ~Saurav
