[ 1539.636920][ T1698] gre: GRE over IPv4 demultiplexer driver
[ 1540.051989][ T1721] ip_gre: GRE over IPv4 tunneling driver
[ 1555.322333][ T2292] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.650628][ T2541] ping (2541) used greatest stack depth: 23216 bytes left
[ 1565.374483][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1567.294453][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.087442][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1571.070450][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!