[ 1507.488772][T26268] gre: GRE over IPv4 demultiplexer driver
[ 1507.929465][T26291] ip_gre: GRE over IPv4 tunneling driver
[ 1523.607315][T26862] ip6_gre: GRE over IPv6 tunneling driver
[ 1529.103495][T27115] ping (27115) used greatest stack depth: 23296 bytes left
[ 1533.921577][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1535.905537][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1537.761546][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1539.809557][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1562.688445][T28344] ping (28344) used greatest stack depth: 22880 bytes left