[ 1441.767195][T30906] gre: GRE over IPv4 demultiplexer driver
[ 1442.270524][T30929] ip_gre: GRE over IPv4 tunneling driver
[ 1458.155155][T31501] ip6_gre: GRE over IPv6 tunneling driver
[ 1462.636952][T31701] ping (31701) used greatest stack depth: 23296 bytes left
[ 1468.651027][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1470.635991][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1472.490995][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1474.474998][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!