[ 4602.577577][T25668] gre: GRE over IPv4 demultiplexor driver
[ 4604.781820][T25691] ip_gre: GRE over IPv4 tunneling driver
[ 4669.090865][T26262] ip6_gre: GRE over IPv6 tunneling driver
[ 4691.656432][T26462] ping (26462) used greatest stack depth: 23464 bytes left
[ 4713.952802][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4720.224719][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4725.408731][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4731.489708][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4762.258084][T27080] ping (27080) used greatest stack depth: 22896 bytes left