[ 4463.707258][T26349] gre: GRE over IPv4 demultiplexor driver
[ 4465.705901][T26372] ip_gre: GRE over IPv4 tunneling driver
[ 4526.015731][T26953] ip6_gre: GRE over IPv6 tunneling driver
[ 4552.935005][T27202] ping (27202) used greatest stack depth: 23392 bytes left
[ 4568.441290][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4574.265165][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4579.321174][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4585.273193][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!