[ 1679.151524][T26033] gre: GRE over IPv4 demultiplexer driver
[ 1679.615581][T26057] ip_gre: GRE over IPv4 tunneling driver
[ 1695.626089][T26633] ip6_gre: GRE over IPv6 tunneling driver
[ 1701.210545][T26882] ping (26882) used greatest stack depth: 23208 bytes left
[ 1706.179545][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1708.226531][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1710.082523][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1712.066531][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!