[ 1501.142936][T30590] gre: GRE over IPv4 demultiplexer driver
[ 1501.636612][T30613] ip_gre: GRE over IPv4 tunneling driver
[ 1517.627705][T31184] ip6_gre: GRE over IPv6 tunneling driver
[ 1523.248759][T31433] ping (31433) used greatest stack depth: 23072 bytes left
[ 1528.248272][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1530.232234][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1532.087239][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1534.135246][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!