[ 3153.203245][T27771] gre: GRE over IPv4 demultiplexor driver
[ 3154.350230][T27794] ip_gre: GRE over IPv4 tunneling driver
[ 3191.138016][T28367] ip6_gre: GRE over IPv6 tunneling driver
[ 3207.800754][T28628] ping (28628) used greatest stack depth: 23552 bytes left
[ 3211.035843][T26104] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3218.203657][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3222.107655][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3225.499657][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3229.275680][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!