[ 3435.271455][T22846] gre: GRE over IPv4 demultiplexor driver
[ 3436.463442][T22869] ip_gre: GRE over IPv4 tunneling driver
[ 3473.106103][T23440] ip6_gre: GRE over IPv6 tunneling driver
[ 3477.094314][T23501] ping (23501) used greatest stack depth: 22928 bytes left
[ 3497.628462][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3501.469411][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3504.796391][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3508.636397][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!