[ 4394.642187][T29225] gre: GRE over IPv4 demultiplexer driver
[ 4396.398980][T29248] ip_gre: GRE over IPv4 tunneling driver
[ 4448.779127][T29819] ip6_gre: GRE over IPv6 tunneling driver
[ 4471.475113][T30068] ping (30068) used greatest stack depth: 23440 bytes left
[ 4484.897413][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4490.018317][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4494.561366][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4499.874311][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!