[ 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!