[ 4672.758403][T25520] gre: GRE over IPv4 demultiplexor driver
[ 4675.005804][T25543] ip_gre: GRE over IPv4 tunneling driver
[ 4740.544262][T26118] ip6_gre: GRE over IPv6 tunneling driver
[ 4769.429938][T26367] ping (26367) used greatest stack depth: 23584 bytes left
[ 4786.749359][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4793.213315][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4798.717295][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4805.246313][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4963.532574][T28016] ping (28016) used greatest stack depth: 23376 bytes left