[ 3171.374804][T27804] gre: GRE over IPv4 demultiplexor driver
[ 3172.523065][T27827] ip_gre: GRE over IPv4 tunneling driver
[ 3187.579241][T28080] ping (28080) used greatest stack depth: 23856 bytes left
[ 3208.674028][T28403] ip6_gre: GRE over IPv6 tunneling driver
[ 3223.636827][T28654] ping (28654) used greatest stack depth: 23568 bytes left
[ 3223.966600][T31652] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3229.032937][T28748] ping (28748) used greatest stack depth: 23296 bytes left
[ 3233.310462][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3237.087456][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3240.415444][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3244.254471][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!