[ 4691.653281][T24553] gre: GRE over IPv4 demultiplexor driver
[ 4693.882816][T24576] ip_gre: GRE over IPv4 tunneling driver
[ 4723.393639][T24836] ping (24836) used greatest stack depth: 23360 bytes left
[ 4760.655259][T25157] ip6_gre: GRE over IPv6 tunneling driver
[ 4807.859356][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4814.322294][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4819.698308][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4825.971313][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!