[ 4369.181660][T29108] gre: GRE over IPv4 demultiplexer driver
[ 4370.876134][T29131] ip_gre: GRE over IPv4 tunneling driver
[ 4420.018721][T29704] ip6_gre: GRE over IPv6 tunneling driver
[ 4436.658783][T29903] ping (29903) used greatest stack depth: 23280 bytes left
[ 4453.418098][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4458.346055][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4462.569057][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4467.497154][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!