[ 1513.118275][T15182] gre: GRE over IPv4 demultiplexer driver
[ 1513.559640][T15205] ip_gre: GRE over IPv4 tunneling driver
[ 1518.724639][T15459] ping (15459) used greatest stack depth: 23424 bytes left
[ 1528.786840][T15792] ip6_gre: GRE over IPv6 tunneling driver
[ 1538.753698][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1540.673661][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1542.465665][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1544.449676][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!