[ 1531.866568][T20211] gre: GRE over IPv4 demultiplexer driver
[ 1532.372573][T20234] ip_gre: GRE over IPv4 tunneling driver
[ 1533.209316][T20279] ip (20279) used greatest stack depth: 23984 bytes left
[ 1548.112795][T20805] ip6_gre: GRE over IPv6 tunneling driver
[ 1551.754831][   T10] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1553.599462][T21054] ping (21054) used greatest stack depth: 23712 bytes left
[ 1558.483713][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1560.531711][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1562.386712][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1564.371726][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!