[ 4671.454224][T24379] gre: GRE over IPv4 demultiplexor driver [ 4673.978122][T24409] ip_gre: GRE over IPv4 tunneling driver [ 4703.276396][T24663] ping (24663) used greatest stack depth: 23632 bytes left [ 4740.554185][T24982] ip6_gre: GRE over IPv6 tunneling driver [ 4770.121068][T25239] ping (25239) used greatest stack depth: 23600 bytes left [ 4787.062486][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4793.397449][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4799.093419][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4805.429518][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured!