[ 4332.970661][T20223] gre: GRE over IPv4 demultiplexor driver
[ 4335.140280][T20246] ip_gre: GRE over IPv4 tunneling driver
[ 4396.794817][T20818] ip6_gre: GRE over IPv6 tunneling driver
[ 4419.311297][T21017] ping (21017) used greatest stack depth: 22312 bytes left
[ 4442.035474][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4448.115343][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4453.172380][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4459.251369][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!