[ 1600.366117][T28405] gre: GRE over IPv4 demultiplexer driver
[ 1600.857448][T28428] ip_gre: GRE over IPv4 tunneling driver
[ 1608.879380][T28775] ping (28775) used greatest stack depth: 22976 bytes left
[ 1617.498785][T29001] ip6_gre: GRE over IPv6 tunneling driver
[ 1621.402467][   T50] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1628.434404][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1630.546395][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1632.465407][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1634.578396][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!