[ 1595.745610][T28398] gre: GRE over IPv4 demultiplexer driver
[ 1596.255859][T28421] ip_gre: GRE over IPv4 tunneling driver
[ 1613.044045][T29004] ip6_gre: GRE over IPv6 tunneling driver
[ 1621.128793][T29348] ping (29348) used greatest stack depth: 23120 bytes left
[ 1624.015252][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1626.064211][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1627.983218][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1630.096213][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1635.772137][T29821] ping (29821) used greatest stack depth: 22992 bytes left