[ 1421.351548][ T1536] gre: GRE over IPv4 demultiplexer driver
[ 1421.856997][ T1559] ip_gre: GRE over IPv4 tunneling driver
[ 1427.399885][ T1811] ping (1811) used greatest stack depth: 23520 bytes left
[ 1437.915418][ T2131] ip6_gre: GRE over IPv6 tunneling driver
[ 1443.570761][ T2380] ping (2380) used greatest stack depth: 23072 bytes left
[ 1448.560838][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1450.609796][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1452.528805][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1454.641792][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!