[ 4674.379106][T25521] gre: GRE over IPv4 demultiplexor driver
[ 4676.627823][T25544] ip_gre: GRE over IPv4 tunneling driver
[ 4741.613907][T26116] ip6_gre: GRE over IPv6 tunneling driver
[ 4769.768662][T26367] ping (26367) used greatest stack depth: 23552 bytes left
[ 4786.246590][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4792.582504][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4798.085481][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4804.549506][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4904.836220][T27516] ping (27516) used greatest stack depth: 21872 bytes left