[ 4472.204956][T22426] gre: GRE over IPv4 demultiplexor driver
[ 4474.383624][T22449] ip_gre: GRE over IPv4 tunneling driver
[ 4512.389486][T22802] ping (22802) used greatest stack depth: 22216 bytes left
[ 4537.830900][T23028] ip6_gre: GRE over IPv6 tunneling driver
[ 4582.808336][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4589.208283][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4594.456268][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4600.472274][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!