[ 3223.704496][T23677] gre: GRE over IPv4 demultiplexer driver
[ 3225.286040][T23700] ip_gre: GRE over IPv4 tunneling driver
[ 3273.170105][T24272] ip6_gre: GRE over IPv6 tunneling driver
[ 3294.030842][T23200] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3306.125423][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3310.862423][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3315.021456][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3319.822474][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3397.817024][T25752] ping (25752) used greatest stack depth: 23280 bytes left