[ 3370.309297][T31534] gre: GRE over IPv4 demultiplexor driver
[ 3371.439534][T31557] ip_gre: GRE over IPv4 tunneling driver
[ 3405.256233][T32131] ip6_gre: GRE over IPv6 tunneling driver
[ 3419.367149][T32380] ping (32380) used greatest stack depth: 23296 bytes left
[ 3424.933824][T26352] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3428.708705][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3432.420694][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3435.620700][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3439.269688][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!