[ 1567.472658][T28395] gre: GRE over IPv4 demultiplexer driver
[ 1567.963356][T28418] ip_gre: GRE over IPv4 tunneling driver
[ 1584.548523][T28992] ip6_gre: GRE over IPv6 tunneling driver
[ 1592.540069][T29335] ping (29335) used greatest stack depth: 23184 bytes left
[ 1595.477581][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1597.589541][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1599.510546][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1601.621560][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!