[ 1044.767199][T15060] gre: GRE over IPv4 demultiplexer driver
[ 1045.267281][T15092] ip_gre: GRE over IPv4 tunneling driver
[ 1061.710592][T15760] ip6_gre: GRE over IPv6 tunneling driver
[ 1067.389322][T16049] ping (16049) used greatest stack depth: 23872 bytes left
[ 1072.241844][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1074.225811][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1076.080810][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1078.064821][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1100.571112][T17483] ping (17483) used greatest stack depth: 23376 bytes left