[ 3237.773012][T26193] gre: GRE over IPv4 demultiplexor driver
[ 3239.046789][T26216] ip_gre: GRE over IPv4 tunneling driver
[ 3275.206313][T26793] ip6_gre: GRE over IPv6 tunneling driver
[ 3295.818940][T27136] ping (27136) used greatest stack depth: 22064 bytes left
[ 3300.145296][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3303.922235][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3307.313271][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3311.153302][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!