[ 3191.811101][T23667] gre: GRE over IPv4 demultiplexer driver
[ 3193.423828][T23690] ip_gre: GRE over IPv4 tunneling driver
[ 3242.123036][T24262] ip6_gre: GRE over IPv6 tunneling driver
[ 3275.457479][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3280.385354][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3284.609350][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3289.473356][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3367.869495][T25744] ping (25744) used greatest stack depth: 23712 bytes left