[ 2615.673777][T19283] gre: GRE over IPv4 demultiplexor driver
[ 2617.467470][T19306] ip_gre: GRE over IPv4 tunneling driver
[ 2670.625803][T19878] ip6_gre: GRE over IPv6 tunneling driver
[ 2694.372728][T20127] ping (20127) used greatest stack depth: 21744 bytes left
[ 2708.591040][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2713.838966][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2718.382958][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2723.566974][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!