[ 1521.385218][T28397] gre: GRE over IPv4 demultiplexer driver
[ 1521.825363][T28421] ip_gre: GRE over IPv4 tunneling driver
[ 1537.304995][T28994] ip6_gre: GRE over IPv6 tunneling driver
[ 1542.722540][T29243] ping (29243) used greatest stack depth: 22816 bytes left
[ 1547.517664][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1549.502635][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1551.294637][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1553.277653][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!