[ 1610.450543][T22192] gre: GRE over IPv4 demultiplexer driver
[ 1610.961904][T22215] ip_gre: GRE over IPv4 tunneling driver
[ 1626.730953][T22793] ip6_gre: GRE over IPv6 tunneling driver
[ 1632.379085][T23049] ping (23049) used greatest stack depth: 23072 bytes left
[ 1637.321207][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1639.370179][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1641.226174][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1643.210183][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!