[ 1553.412506][ T1420] gre: GRE over IPv4 demultiplexer driver
[ 1553.861727][ T1443] ip_gre: GRE over IPv4 tunneling driver
[ 1571.476779][ T2016] ip6_gre: GRE over IPv6 tunneling driver
[ 1578.319249][ T2266] ping (2266) used greatest stack depth: 23504 bytes left
[ 1583.397171][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1585.766136][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1587.686147][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1589.734134][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1615.233103][ T3493] ping (3493) used greatest stack depth: 23456 bytes left