[ 1467.437246][T25482] gre: GRE over IPv4 demultiplexer driver
[ 1467.943709][T25505] ip_gre: GRE over IPv4 tunneling driver
[ 1483.813614][T26076] ip6_gre: GRE over IPv6 tunneling driver
[ 1491.335326][T26421] ping (26421) used greatest stack depth: 22544 bytes left
[ 1494.229492][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1496.212462][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1498.068461][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1500.117458][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!