[ 4322.392950][T29253] gre: GRE over IPv4 demultiplexer driver
[ 4324.069125][T29276] ip_gre: GRE over IPv4 tunneling driver
[ 4375.365138][T29852] ip6_gre: GRE over IPv6 tunneling driver
[ 4397.092122][T30102] ping (30102) used greatest stack depth: 23440 bytes left
[ 4410.605978][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4416.173743][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4420.781819][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4425.901763][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!