[ 4424.268188][T26176] gre: GRE over IPv4 demultiplexor driver [ 4426.340262][T26199] ip_gre: GRE over IPv4 tunneling driver [ 4486.641207][T26772] ip6_gre: GRE over IPv6 tunneling driver [ 4523.014524][T27123] ping (27123) used greatest stack depth: 21600 bytes left [ 4528.960200][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4534.913141][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4539.840132][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4545.664150][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!