[ 1406.238428][T24946] gre: GRE over IPv4 demultiplexer driver
[ 1406.666860][T24969] ip_gre: GRE over IPv4 tunneling driver
[ 1422.044135][T25542] ip6_gre: GRE over IPv6 tunneling driver
[ 1427.365464][T25791] ping (25791) used greatest stack depth: 23344 bytes left
[ 1432.048196][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1434.032162][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1435.824161][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1437.807182][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!