[ 1541.152476][T17224] gre: GRE over IPv4 demultiplexer driver
[ 1541.668420][T17247] ip_gre: GRE over IPv4 tunneling driver
[ 1557.601702][T17825] ip6_gre: GRE over IPv6 tunneling driver
[ 1563.233373][T18082] ping (18082) used greatest stack depth: 23072 bytes left
[ 1568.158614][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1570.143566][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1572.062567][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1574.046581][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!