[ 1513.349130][T28408] gre: GRE over IPv4 demultiplexer driver
[ 1513.781881][T28431] ip_gre: GRE over IPv4 tunneling driver
[ 1529.506202][T29004] ip6_gre: GRE over IPv6 tunneling driver
[ 1535.011867][T29254] ping (29254) used greatest stack depth: 22448 bytes left
[ 1539.905855][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1541.889823][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1543.745826][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1545.730818][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!