[ 1440.769633][T19944] gre: GRE over IPv4 demultiplexer driver
[ 1441.465535][T19967] ip_gre: GRE over IPv4 tunneling driver
[ 1458.975671][T20538] ip6_gre: GRE over IPv6 tunneling driver
[ 1465.505299][T20788] ping (20788) used greatest stack depth: 23072 bytes left
[ 1471.032172][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1473.081137][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1474.937137][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1477.176145][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!