[ 1550.273025][T21752] gre: GRE over IPv4 demultiplexer driver
[ 1550.788110][T21775] ip_gre: GRE over IPv4 tunneling driver
[ 1556.538411][T22041] ping (22041) used greatest stack depth: 23520 bytes left
[ 1567.034982][T22360] ip6_gre: GRE over IPv6 tunneling driver
[ 1572.625663][T22609] ping (22609) used greatest stack depth: 23072 bytes left
[ 1577.499700][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1579.547676][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1581.403803][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1583.451667][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!