[ 3145.168736][T26171] gre: GRE over IPv4 demultiplexor driver
[ 3146.354274][T26194] ip_gre: GRE over IPv4 tunneling driver
[ 3181.109852][T26769] ip6_gre: GRE over IPv6 tunneling driver
[ 3195.584448][T27018] ping (27018) used greatest stack depth: 23296 bytes left
[ 3205.894372][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3209.797272][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3212.933285][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3216.709280][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!