[ 4254.574661][T29283] gre: GRE over IPv4 demultiplexer driver
[ 4256.151142][T29306] ip_gre: GRE over IPv4 tunneling driver
[ 4259.753274][T29357] ip (29357) used greatest stack depth: 23600 bytes left
[ 4302.929847][T29886] ip6_gre: GRE over IPv6 tunneling driver
[ 4322.904163][T30135] ping (30135) used greatest stack depth: 23488 bytes left
[ 4335.370998][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4340.235039][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4345.161973][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4350.153948][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!