[ 3529.868549][T17738] gre: GRE over IPv4 demultiplexor driver
[ 3531.885603][T17762] ip_gre: GRE over IPv4 tunneling driver
[ 3559.317181][T18014] ping (18014) used greatest stack depth: 22384 bytes left
[ 3594.047262][T18335] ip6_gre: GRE over IPv6 tunneling driver
[ 3637.101195][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3643.053102][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3648.045092][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3653.933105][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!