[ 4032.752635][T24558] gre: GRE over IPv4 demultiplexor driver
[ 4034.790601][T24581] ip_gre: GRE over IPv4 tunneling driver
[ 4055.742731][T24784] ping (24784) used greatest stack depth: 23608 bytes left
[ 4060.849324][T24834] ping (24834) used greatest stack depth: 23480 bytes left
[ 4094.206705][T25154] ip6_gre: GRE over IPv6 tunneling driver
[ 4101.340951][T25215] ping (25215) used greatest stack depth: 23440 bytes left
[ 4120.624803][T25403] ping (25403) used greatest stack depth: 23360 bytes left
[ 4136.008271][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4141.896217][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4147.081205][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4152.904196][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!