[ 1506.332432][T25225] gre: GRE over IPv4 demultiplexer driver
[ 1506.820137][T25248] ip_gre: GRE over IPv4 tunneling driver
[ 1522.551814][T25820] ip6_gre: GRE over IPv6 tunneling driver
[ 1528.014818][T26070] ping (26070) used greatest stack depth: 23072 bytes left
[ 1532.849900][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1534.832874][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1536.688878][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1538.672870][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!