[ 4407.809471][T29211] gre: GRE over IPv4 demultiplexer driver
[ 4409.425946][T29234] ip_gre: GRE over IPv4 tunneling driver
[ 4458.498018][T29813] ip6_gre: GRE over IPv6 tunneling driver
[ 4479.590233][ T5458] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4486.730127][T30156] ping (30156) used greatest stack depth: 23440 bytes left
[ 4491.876552][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4496.805535][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4501.028535][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4505.957542][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!