[ 1537.820666][T20718] gre: GRE over IPv4 demultiplexer driver
[ 1538.326476][T20741] ip_gre: GRE over IPv4 tunneling driver
[ 1554.153335][T21312] ip6_gre: GRE over IPv6 tunneling driver
[ 1559.697564][T21561] ping (21561) used greatest stack depth: 23712 bytes left
[ 1559.844598][   T10] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1564.572540][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1566.557534][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1568.412537][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1570.396537][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1591.582953][T22691] ping (22691) used greatest stack depth: 23504 bytes left