[ 1450.507107][T24472] gre: GRE over IPv4 demultiplexer driver
[ 1450.991534][T24495] ip_gre: GRE over IPv4 tunneling driver
[ 1468.039367][T25067] ip6_gre: GRE over IPv6 tunneling driver
[ 1474.115472][T25318] ping (25318) used greatest stack depth: 23120 bytes left
[ 1479.268863][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1481.380841][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1483.300832][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1485.412838][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!