[ 4695.243855][T23276] gre: GRE over IPv4 demultiplexor driver
[ 4697.475685][T23299] ip_gre: GRE over IPv4 tunneling driver
[ 4736.814022][T23647] ping (23647) used greatest stack depth: 22400 bytes left
[ 4763.556933][T23874] ip6_gre: GRE over IPv6 tunneling driver
[ 4810.066134][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4816.594186][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4822.034073][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4828.562059][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4936.103428][T25352] ping (25352) used greatest stack depth: 22128 bytes left