[ 4720.042708][T24786] gre: GRE over IPv4 demultiplexor driver [ 4722.303342][T24809] ip_gre: GRE over IPv4 tunneling driver [ 4762.360190][T25156] ping (25156) used greatest stack depth: 22592 bytes left [ 4788.900494][T25383] ip6_gre: GRE over IPv6 tunneling driver [ 4836.402599][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4842.929533][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4848.433510][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4854.897532][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!