[ 4602.577577][T25668] gre: GRE over IPv4 demultiplexor driver [ 4604.781820][T25691] ip_gre: GRE over IPv4 tunneling driver [ 4669.090865][T26262] ip6_gre: GRE over IPv6 tunneling driver [ 4691.656432][T26462] ping (26462) used greatest stack depth: 23464 bytes left [ 4713.952802][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4720.224719][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4725.408731][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4731.489708][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4762.258084][T27080] ping (27080) used greatest stack depth: 22896 bytes left