[ 1415.436401][  T742] gre: GRE over IPv4 demultiplexer driver
[ 1415.910192][  T769] ip_gre: GRE over IPv4 tunneling driver
[ 1431.185173][ T1348] ip6_gre: GRE over IPv6 tunneling driver
[ 1436.404903][ T1597] ping (1597) used greatest stack depth: 22928 bytes left
[ 1441.154631][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1443.073600][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1444.865600][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1446.850599][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1497.202027][ T3867] tcpdump (3867) used greatest stack depth: 22728 bytes left