[ 3106.459987][T20644] gre: GRE over IPv4 demultiplexor driver
[ 3107.593058][T20668] ip_gre: GRE over IPv4 tunneling driver
[ 3121.743825][T20922] ping (20922) used greatest stack depth: 23856 bytes left
[ 3127.947692][T21045] ip (21045) used greatest stack depth: 23840 bytes left
[ 3142.568294][T21242] ip6_gre: GRE over IPv6 tunneling driver
[ 3146.858589][T20382] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3154.665535][T20721] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3157.041412][T21491] ping (21491) used greatest stack depth: 23312 bytes left
[ 3166.569443][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3170.345450][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3173.673428][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3177.385494][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!