[ 3136.550318][T27808] gre: GRE over IPv4 demultiplexor driver
[ 3137.679160][T27831] ip_gre: GRE over IPv4 tunneling driver
[ 3152.136877][T28083] ping (28083) used greatest stack depth: 22968 bytes left
[ 3172.461347][T28407] ip6_gre: GRE over IPv6 tunneling driver
[ 3179.120811][   T30] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3187.312082][T26125] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3196.272509][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3199.919515][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3203.120516][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3206.831536][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!