[ 3229.852670][T27929] gre: GRE over IPv4 demultiplexor driver
[ 3231.015079][T27952] ip_gre: GRE over IPv4 tunneling driver
[ 3267.422671][T28538] ip6_gre: GRE over IPv6 tunneling driver
[ 3279.421926][T28738] ping (28738) used greatest stack depth: 22688 bytes left
[ 3292.163080][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3295.940000][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3299.458986][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3303.363004][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!