[ 3320.502120][T23674] gre: GRE over IPv4 demultiplexer driver
[ 3322.227032][T23697] ip_gre: GRE over IPv4 tunneling driver
[ 3371.405984][T24269] ip6_gre: GRE over IPv6 tunneling driver
[ 3391.546519][T24522] ping (24522) used greatest stack depth: 23648 bytes left
[ 3404.312610][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3409.369530][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3413.592558][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3418.392570][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3497.751564][T25747] ping (25747) used greatest stack depth: 23328 bytes left