[ 2656.674231][T20392] gre: GRE over IPv4 demultiplexor driver
[ 2658.455821][T20415] ip_gre: GRE over IPv4 tunneling driver
[ 2712.835080][T20993] ip6_gre: GRE over IPv6 tunneling driver
[ 2749.046356][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2754.038300][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2758.391291][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2763.510297][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2796.474127][T21905] ping (21905) used greatest stack depth: 23120 bytes left
[ 2956.166636][T23608] ping (23608) used greatest stack depth: 22704 bytes left