[ 3171.958701][T29053] gre: GRE over IPv4 demultiplexor driver
[ 3173.145768][T29077] ip_gre: GRE over IPv4 tunneling driver
[ 3188.071853][T29329] ping (29329) used greatest stack depth: 22128 bytes left
[ 3211.621083][T29653] ip6_gre: GRE over IPv6 tunneling driver
[ 3241.122263][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3245.154213][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3248.610153][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3252.450175][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!