[ 4015.232482][T24586] gre: GRE over IPv4 demultiplexor driver
[ 4017.544457][T24610] ip_gre: GRE over IPv4 tunneling driver
[ 4077.955902][T25187] ip6_gre: GRE over IPv6 tunneling driver
[ 4104.300555][T25436] ping (25436) used greatest stack depth: 23632 bytes left
[ 4120.009968][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4126.217822][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4131.401864][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4137.417832][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!