[ 1446.724873][ T1485] gre: GRE over IPv4 demultiplexer driver
[ 1447.151220][ T1508] ip_gre: GRE over IPv4 tunneling driver
[ 1452.487512][ T1765] ping (1765) used greatest stack depth: 23224 bytes left
[ 1462.597813][ T2084] ip6_gre: GRE over IPv6 tunneling driver
[ 1469.993910][ T2442] ping (2442) used greatest stack depth: 22912 bytes left
[ 1472.807611][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1474.791583][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1476.647582][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1478.631580][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!