[ 1821.715160][T17010] gre: GRE over IPv4 demultiplexer driver
[ 1822.283339][T17033] ip_gre: GRE over IPv4 tunneling driver
[ 1829.292592][T17287] ping (17287) used greatest stack depth: 23040 bytes left
[ 1841.447250][T17606] ip6_gre: GRE over IPv6 tunneling driver
[ 1846.203381][T17663] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1851.258503][T17663] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1854.267294][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1856.571295][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1858.683293][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1860.923299][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!