[ 4393.234050][T29213] gre: GRE over IPv4 demultiplexer driver
[ 4394.915849][T29236] ip_gre: GRE over IPv4 tunneling driver
[ 4444.164724][T29807] ip6_gre: GRE over IPv6 tunneling driver
[ 4461.209860][T30006] ping (30006) used greatest stack depth: 23120 bytes left
[ 4478.545192][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4483.600159][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4487.824163][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4492.816149][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!