[ 4657.271980][T24755] gre: GRE over IPv4 demultiplexor driver
[ 4659.371546][T24778] ip_gre: GRE over IPv4 tunneling driver
[ 4666.934888][T24842] ping (24842) used greatest stack depth: 23792 bytes left
[ 4722.366385][T25351] ip6_gre: GRE over IPv6 tunneling driver
[ 4750.387412][T25600] ping (25600) used greatest stack depth: 23616 bytes left
[ 4760.563654][T25694] ping (25694) used greatest stack depth: 23360 bytes left
[ 4766.692469][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4772.772398][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4777.891432][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4784.035416][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!