[ 4453.422349][T26213] gre: GRE over IPv4 demultiplexor driver [ 4455.789321][T26236] ip_gre: GRE over IPv4 tunneling driver [ 4516.112816][T26808] ip6_gre: GRE over IPv6 tunneling driver [ 4541.982745][T27059] ping (27059) used greatest stack depth: 23616 bytes left [ 4557.298403][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4563.122318][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4567.923313][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4573.618331][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!