[ 1606.154764][ T2738] gre: GRE over IPv4 demultiplexer driver
[ 1606.640980][ T2761] ip_gre: GRE over IPv4 tunneling driver
[ 1622.496463][ T3335] ip6_gre: GRE over IPv6 tunneling driver
[ 1628.137338][ T3584] ping (3584) used greatest stack depth: 23208 bytes left
[ 1633.061775][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1635.045737][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1636.901735][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1638.884739][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!