[ 4555.041676][T21956] gre: GRE over IPv4 demultiplexer driver
[ 4556.723831][T21979] ip_gre: GRE over IPv4 tunneling driver
[ 4607.025877][T22555] ip6_gre: GRE over IPv6 tunneling driver
[ 4641.321265][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4646.313169][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4650.665167][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4655.785186][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4678.978682][T23374] ping (23374) used greatest stack depth: 23792 bytes left
[ 4738.309790][T24033] ping (24033) used greatest stack depth: 22608 bytes left