[ 4094.356211][T28815] gre: GRE over IPv4 demultiplexer driver
[ 4095.956515][T28838] ip_gre: GRE over IPv4 tunneling driver
[ 4144.377593][T29414] ip6_gre: GRE over IPv6 tunneling driver
[ 4160.695506][T29614] ping (29614) used greatest stack depth: 23360 bytes left
[ 4177.434892][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4182.235777][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4186.458795][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4191.322791][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!