[ 1536.518766][T31547] gre: GRE over IPv4 demultiplexer driver
[ 1536.996244][T31570] ip_gre: GRE over IPv4 tunneling driver
[ 1552.810832][T32142] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.355133][T32485] ping (32485) used greatest stack depth: 23240 bytes left
[ 1563.246448][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1565.295414][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1567.151411][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.199418][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!