[ 4465.420153][T20899] gre: GRE over IPv4 demultiplexer driver
[ 4467.085062][T20923] ip_gre: GRE over IPv4 tunneling driver
[ 4517.221654][T21495] ip6_gre: GRE over IPv6 tunneling driver
[ 4538.853222][T21751] ping (21751) used greatest stack depth: 23440 bytes left
[ 4551.961579][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4556.954498][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4561.178517][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4566.169483][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!