[ 4536.325892][T29661] gre: GRE over IPv4 demultiplexer driver
[ 4537.981476][T29684] ip_gre: GRE over IPv4 tunneling driver
[ 4587.364064][T30255] ip6_gre: GRE over IPv6 tunneling driver
[ 4608.514229][T30507] ping (30507) used greatest stack depth: 22928 bytes left
[ 4621.343778][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4626.206741][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4630.366753][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4635.295714][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!