[ 1198.876047][T16589] gre: GRE over IPv4 demultiplexer driver
[ 1199.416119][T16612] ip_gre: GRE over IPv4 tunneling driver
[ 1217.132237][T17193] ip6_gre: GRE over IPv6 tunneling driver
[ 1223.396752][T17444] ping (17444) used greatest stack depth: 23120 bytes left
[ 1225.810459][T14513] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1228.687366][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1230.863374][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1232.846385][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1235.023376][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!