[ 1463.115370][T17084] gre: GRE over IPv4 demultiplexer driver
[ 1463.646014][T17107] ip_gre: GRE over IPv4 tunneling driver
[ 1469.535699][T17360] ping (17360) used greatest stack depth: 23968 bytes left
[ 1470.518042][T17404] ping (17404) used greatest stack depth: 23824 bytes left
[ 1480.337200][T17679] ip6_gre: GRE over IPv6 tunneling driver
[ 1486.218958][T17929] ping (17929) used greatest stack depth: 23584 bytes left
[ 1491.319126][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1493.368087][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1495.288099][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1497.400098][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1520.213980][T19065] ping (19065) used greatest stack depth: 23384 bytes left
[ 1553.713421][T20196] ping (20196) used greatest stack depth: 23248 bytes left