[ 3171.702007][T20111] gre: GRE over IPv4 demultiplexor driver
[ 3172.929352][T20134] ip_gre: GRE over IPv4 tunneling driver
[ 3187.984782][T20388] ping (20388) used greatest stack depth: 23856 bytes left
[ 3209.262077][T20714] ip6_gre: GRE over IPv6 tunneling driver
[ 3226.223231][T20967] ping (20967) used greatest stack depth: 23296 bytes left
[ 3238.002322][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3242.163226][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3245.747207][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3249.714190][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!