[ 1508.031583][T16001] gre: GRE over IPv4 demultiplexer driver
[ 1508.534002][T16024] ip_gre: GRE over IPv4 tunneling driver
[ 1525.181461][T16596] ip6_gre: GRE over IPv6 tunneling driver
[ 1529.937656][T16795] ping (16795) used greatest stack depth: 22912 bytes left
[ 1536.158891][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1538.270851][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1540.190844][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1542.303855][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!