[ 1517.479121][  T899] gre: GRE over IPv4 demultiplexer driver
[ 1517.938096][  T922] ip_gre: GRE over IPv4 tunneling driver
[ 1533.802402][ T1495] ip6_gre: GRE over IPv6 tunneling driver
[ 1541.346959][ T1838] ping (1838) used greatest stack depth: 22800 bytes left
[ 1544.182769][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1546.167738][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1548.023730][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1550.007733][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!