[ 1649.233267][T19426] gre: GRE over IPv4 demultiplexer driver
[ 1649.721591][T19449] ip_gre: GRE over IPv4 tunneling driver
[ 1665.531122][T20024] ip6_gre: GRE over IPv6 tunneling driver
[ 1673.147766][T20368] ping (20368) used greatest stack depth: 23168 bytes left
[ 1676.020968][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1678.005934][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1679.860938][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1681.845931][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!