[ 4430.692044][T26345] gre: GRE over IPv4 demultiplexor driver
[ 4432.645098][T26368] ip_gre: GRE over IPv4 tunneling driver
[ 4468.375688][T26716] ping (26716) used greatest stack depth: 22640 bytes left
[ 4493.265165][T26949] ip6_gre: GRE over IPv6 tunneling driver
[ 4535.164717][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4541.052679][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4545.980653][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4551.740651][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!