[ 4444.338238][T26225] gre: GRE over IPv4 demultiplexor driver [ 4446.392099][T26248] ip_gre: GRE over IPv4 tunneling driver [ 4508.201674][T26820] ip6_gre: GRE over IPv6 tunneling driver [ 4545.084308][T27164] ping (27164) used greatest stack depth: 22416 bytes left [ 4551.086997][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4557.101898][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4562.221908][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4568.109911][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!