[ 3229.777731][T22576] gre: GRE over IPv4 demultiplexor driver
[ 3231.757791][T22600] ip_gre: GRE over IPv4 tunneling driver
[ 3294.653102][T23174] ip6_gre: GRE over IPv6 tunneling driver
[ 3316.094500][T23373] ping (23373) used greatest stack depth: 22656 bytes left
[ 3336.815407][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3342.638340][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3347.566355][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3353.454354][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!