[ 3168.189483][T28927] gre: GRE over IPv4 demultiplexor driver
[ 3169.359297][T28951] ip_gre: GRE over IPv4 tunneling driver
[ 3205.711706][T29522] ip6_gre: GRE over IPv6 tunneling driver
[ 3210.415464][ T2164] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3218.669420][T26167] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3226.335461][T29866] ping (29866) used greatest stack depth: 21656 bytes left
[ 3230.574336][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3234.349378][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3237.742341][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3241.517338][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!