[ 3291.899155][T23672] gre: GRE over IPv4 demultiplexer driver
[ 3293.510497][T23695] ip_gre: GRE over IPv4 tunneling driver
[ 3343.110519][T24275] ip6_gre: GRE over IPv6 tunneling driver
[ 3364.131524][T24525] ping (24525) used greatest stack depth: 23648 bytes left
[ 3376.968933][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3381.832792][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3386.120789][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3390.919823][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!