[ 3871.164667][T20104] gre: GRE over IPv4 demultiplexor driver
[ 3873.248856][T20127] ip_gre: GRE over IPv4 tunneling driver
[ 3933.801159][T20699] ip6_gre: GRE over IPv6 tunneling driver
[ 3976.000597][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3981.890277][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3986.816493][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3992.641488][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4030.333150][T21609] ping (21609) used greatest stack depth: 22944 bytes left