[ 1540.523208][  T827] gre: GRE over IPv4 demultiplexer driver
[ 1541.053536][  T850] ip_gre: GRE over IPv4 tunneling driver
[ 1557.005615][ T1428] ip6_gre: GRE over IPv6 tunneling driver
[ 1561.442753][ T1627] ping (1627) used greatest stack depth: 23664 bytes left
[ 1564.689345][   T65] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1567.400296][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.448302][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1571.304353][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1573.353304][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!