[ 3161.138133][T28950] gre: GRE over IPv4 demultiplexor driver
[ 3162.307081][T28973] ip_gre: GRE over IPv4 tunneling driver
[ 3197.257623][T29550] ip6_gre: GRE over IPv6 tunneling driver
[ 3211.618506][T29799] ping (29799) used greatest stack depth: 23296 bytes left
[ 3221.012586][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3224.661515][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3227.860511][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3231.508503][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!