[ 4380.457449][T29213] gre: GRE over IPv4 demultiplexer driver
[ 4382.084193][T29236] ip_gre: GRE over IPv4 tunneling driver
[ 4430.562984][T29807] ip6_gre: GRE over IPv6 tunneling driver
[ 4458.817244][T30150] ping (30150) used greatest stack depth: 23440 bytes left
[ 4459.253786][T28914] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4463.923224][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.788224][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4473.011246][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4477.875250][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!