[ 3139.721804][T26319] gre: GRE over IPv4 demultiplexor driver
[ 3140.889660][T26343] ip_gre: GRE over IPv4 tunneling driver
[ 3176.319437][T26917] ip6_gre: GRE over IPv6 tunneling driver
[ 3191.082963][T27166] ping (27166) used greatest stack depth: 22336 bytes left
[ 3200.301251][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3203.949160][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3207.149173][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3210.796165][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!