[ 3954.182470][T19702] gre: GRE over IPv4 demultiplexor driver
[ 3956.347986][T19725] ip_gre: GRE over IPv4 tunneling driver
[ 4018.927343][T20297] ip6_gre: GRE over IPv6 tunneling driver
[ 4046.291963][T20554] ping (20554) used greatest stack depth: 23632 bytes left
[ 4056.321236][T20648] ping (20648) used greatest stack depth: 23360 bytes left
[ 4062.386050][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4069.041848][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4074.545789][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4080.818792][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!