[ 1291.030032][T15407] gre: GRE over IPv4 demultiplexer driver
[ 1291.529000][T15430] ip_gre: GRE over IPv4 tunneling driver
[ 1307.307807][T16001] ip6_gre: GRE over IPv6 tunneling driver
[ 1312.822539][T16250] ping (16250) used greatest stack depth: 23824 bytes left
[ 1317.718445][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1319.703408][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1321.558416][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1323.607407][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!