[ 4303.528741][T20091] gre: GRE over IPv4 demultiplexor driver
[ 4305.515445][T20114] ip_gre: GRE over IPv4 tunneling driver
[ 4368.015383][T20695] ip6_gre: GRE over IPv6 tunneling driver
[ 4394.715673][T20945] ping (20945) used greatest stack depth: 21584 bytes left
[ 4410.419885][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4416.499852][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4421.620791][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4427.571786][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!