[ 3237.734978][T27755] gre: GRE over IPv4 demultiplexor driver
[ 3238.928370][T27779] ip_gre: GRE over IPv4 tunneling driver
[ 3256.470902][T28075] ping (28075) used greatest stack depth: 23016 bytes left
[ 3277.556038][T28351] ip6_gre: GRE over IPv6 tunneling driver
[ 3304.231203][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3308.072104][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3311.399105][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3315.175118][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3330.799431][T29167] ping (29167) used greatest stack depth: 22800 bytes left