[ 4293.922929][T21155] gre: GRE over IPv4 demultiplexor driver
[ 4295.633413][T21182] ip_gre: GRE over IPv4 tunneling driver
[ 4324.173457][T21529] ping (21529) used greatest stack depth: 23440 bytes left
[ 4344.442595][T21755] ip6_gre: GRE over IPv6 tunneling driver
[ 4378.092766][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4383.020707][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4387.244715][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4392.108714][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!