[ 4744.552198][T24627] gre: GRE over IPv4 demultiplexor driver
[ 4746.677414][T24650] ip_gre: GRE over IPv4 tunneling driver
[ 4774.609328][T24903] ping (24903) used greatest stack depth: 23160 bytes left
[ 4810.999817][T25222] ip6_gre: GRE over IPv6 tunneling driver
[ 4855.765418][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4862.100355][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4867.412335][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4873.620315][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 5093.334737][T27685] ping (27685) used greatest stack depth: 23104 bytes left