[ 1622.236620][T10852] gre: GRE over IPv4 demultiplexer driver
[ 1622.741063][T10875] ip_gre: GRE over IPv4 tunneling driver
[ 1639.285744][T11450] ip6_gre: GRE over IPv6 tunneling driver
[ 1648.566814][T11794] ping (11794) used greatest stack depth: 22256 bytes left
[ 1651.426543][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1653.475496][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1655.331500][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1657.378510][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!