[ 4350.815534][T21501] gre: GRE over IPv4 demultiplexor driver
[ 4352.868929][T21525] ip_gre: GRE over IPv4 tunneling driver
[ 4389.321312][T21871] ping (21871) used greatest stack depth: 22184 bytes left
[ 4413.244670][T22097] ip6_gre: GRE over IPv6 tunneling driver
[ 4454.769292][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4460.720251][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4465.904240][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4471.856254][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!