[ 4128.798379][T28720] gre: GRE over IPv4 demultiplexer driver
[ 4130.476852][T28743] ip_gre: GRE over IPv4 tunneling driver
[ 4155.276364][T29040] ping (29040) used greatest stack depth: 23280 bytes left
[ 4180.959148][T29315] ip6_gre: GRE over IPv6 tunneling driver
[ 4215.912701][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4220.776593][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4224.936629][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4229.800604][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!