[ 4212.383209][T21429] gre: GRE over IPv4 demultiplexor driver
[ 4213.949440][T21452] ip_gre: GRE over IPv4 tunneling driver
[ 4261.144332][T22030] ip6_gre: GRE over IPv6 tunneling driver
[ 4288.356669][T22384] ping (22384) used greatest stack depth: 23440 bytes left
[ 4293.459606][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4298.323465][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4302.291484][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4307.027475][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!