[ 4702.398194][T24869] gre: GRE over IPv4 demultiplexor driver
[ 4704.575588][T24892] ip_gre: GRE over IPv4 tunneling driver
[ 4733.052104][T25144] ping (25144) used greatest stack depth: 23888 bytes left
[ 4769.081384][T25465] ip6_gre: GRE over IPv6 tunneling driver
[ 4776.649936][T25526] ping (25526) used greatest stack depth: 23616 bytes left
[ 4797.366130][T25719] ping (25719) used greatest stack depth: 23600 bytes left
[ 4813.725507][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4819.932435][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4825.117421][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4831.261477][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!