[ 1538.899316][T18996] gre: GRE over IPv4 demultiplexer driver
[ 1539.381599][T19019] ip_gre: GRE over IPv4 tunneling driver
[ 1555.123392][T19592] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.656641][T19841] ping (19841) used greatest stack depth: 23072 bytes left
[ 1565.467668][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1567.451643][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.307649][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1571.291654][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!