[ 4698.353359][T24643] gre: GRE over IPv4 demultiplexor driver
[ 4700.525820][T24666] ip_gre: GRE over IPv4 tunneling driver
[ 4766.651522][T25240] ip6_gre: GRE over IPv6 tunneling driver
[ 4795.533350][T25490] ping (25490) used greatest stack depth: 23600 bytes left
[ 4812.293824][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4818.821716][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4824.006716][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4830.405705][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!