[ 4039.910276][T23652] gre: GRE over IPv4 demultiplexor driver
[ 4041.895512][T23677] ip_gre: GRE over IPv4 tunneling driver
[ 4103.743934][T24251] ip6_gre: GRE over IPv6 tunneling driver
[ 4131.045706][T24500] ping (24500) used greatest stack depth: 23648 bytes left
[ 4146.834764][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4152.977687][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4158.162673][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4164.242669][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!