[ 3180.760262][T27838] gre: GRE over IPv4 demultiplexor driver
[ 3181.903975][T27861] ip_gre: GRE over IPv4 tunneling driver
[ 3216.917978][T28433] ip6_gre: GRE over IPv6 tunneling driver
[ 3231.110913][T28683] ping (28683) used greatest stack depth: 23360 bytes left
[ 3240.445349][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3244.156304][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3247.421307][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3251.132295][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3377.167466][T31048] ping (31048) used greatest stack depth: 22672 bytes left