[ 3238.603885][T23679] gre: GRE over IPv4 demultiplexer driver
[ 3240.240444][T23702] ip_gre: GRE over IPv4 tunneling driver
[ 3288.376264][T24274] ip6_gre: GRE over IPv6 tunneling driver
[ 3309.818590][T24525] ping (24525) used greatest stack depth: 23632 bytes left
[ 3322.431569][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3327.424466][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3331.648485][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3336.511483][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!