[ 3389.830465][T31439] gre: GRE over IPv4 demultiplexor driver
[ 3390.971742][T31463] ip_gre: GRE over IPv4 tunneling driver
[ 3426.227556][T32037] ip6_gre: GRE over IPv6 tunneling driver
[ 3443.619405][T32330] ping (32330) used greatest stack depth: 22352 bytes left
[ 3450.830112][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3454.606013][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3457.934002][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3461.710997][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!