[ 3912.540985][T20254] gre: GRE over IPv4 demultiplexor driver
[ 3914.542612][T20277] ip_gre: GRE over IPv4 tunneling driver
[ 3975.586152][T20856] ip6_gre: GRE over IPv6 tunneling driver
[ 3996.196074][T21056] ping (21056) used greatest stack depth: 23680 bytes left
[ 4001.314579][T21107] ping (21107) used greatest stack depth: 23360 bytes left
[ 4016.821561][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4022.646483][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4027.701571][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4033.525485][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!