[ 1346.470590][T29988] gre: GRE over IPv4 demultiplexer driver
[ 1346.968703][T30011] ip_gre: GRE over IPv4 tunneling driver
[ 1362.901966][T30587] ip6_gre: GRE over IPv6 tunneling driver
[ 1367.463935][   T73] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1368.429599][T30836] ping (30836) used greatest stack depth: 23888 bytes left
[ 1373.327826][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1375.375839][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1377.231833][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1379.215831][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1400.058306][T31968] ping (31968) used greatest stack depth: 23752 bytes left