[ 3373.629989][T28787] gre: GRE over IPv4 demultiplexor driver
[ 3374.781564][T28810] ip_gre: GRE over IPv4 tunneling driver
[ 3410.147391][T29381] ip6_gre: GRE over IPv6 tunneling driver
[ 3424.774543][T29630] ping (29630) used greatest stack depth: 23616 bytes left
[ 3430.022060][T29724] ping (29724) used greatest stack depth: 23344 bytes left
[ 3434.362229][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3438.139175][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3441.402172][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3445.178164][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!