[ 4367.688163][T21070] gre: GRE over IPv4 demultiplexer driver
[ 4369.278738][T21093] ip_gre: GRE over IPv4 tunneling driver
[ 4416.993886][T21665] ip6_gre: GRE over IPv6 tunneling driver
[ 4436.957170][T21914] ping (21914) used greatest stack depth: 23488 bytes left
[ 4449.487645][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4454.288523][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4458.447539][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4463.184527][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!