[ 4700.937903][T25594] gre: GRE over IPv4 demultiplexor driver
[ 4703.228586][T25618] ip_gre: GRE over IPv4 tunneling driver
[ 4774.462009][T26191] ip6_gre: GRE over IPv6 tunneling driver
[ 4814.646060][T26536] ping (26536) used greatest stack depth: 23296 bytes left
[ 4821.047947][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4827.383819][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4832.887829][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4839.480811][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!