[ 1467.016543][  T665] gre: GRE over IPv4 demultiplexer driver
[ 1467.456405][  T688] ip_gre: GRE over IPv4 tunneling driver
[ 1482.828615][ T1259] ip6_gre: GRE over IPv6 tunneling driver
[ 1490.092599][ T1602] ping (1602) used greatest stack depth: 23216 bytes left
[ 1492.927960][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1494.911933][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1496.702939][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1498.687997][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!