[ 1548.477205][  T664] gre: GRE over IPv4 demultiplexer driver
[ 1548.988319][  T687] ip_gre: GRE over IPv4 tunneling driver
[ 1565.070029][ T1260] ip6_gre: GRE over IPv6 tunneling driver
[ 1570.684847][ T1511] ping (1511) used greatest stack depth: 23072 bytes left
[ 1575.595934][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1577.579900][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1579.434903][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1581.483906][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!