[ 3177.258371][T28933] gre: GRE over IPv4 demultiplexor driver
[ 3178.457227][T28956] ip_gre: GRE over IPv4 tunneling driver
[ 3214.557975][T29527] ip6_gre: GRE over IPv6 tunneling driver
[ 3238.966346][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3242.742255][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3246.006234][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3249.782238][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3340.599489][T31572] ping (31572) used greatest stack depth: 23024 bytes left