[ 1539.241274][T20297] gre: GRE over IPv4 demultiplexer driver
[ 1539.755202][T20320] ip_gre: GRE over IPv4 tunneling driver
[ 1545.575098][T20572] ping (20572) used greatest stack depth: 23296 bytes left
[ 1556.341707][T20891] ip6_gre: GRE over IPv6 tunneling driver
[ 1567.248141][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.360082][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1571.279094][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1573.392098][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1628.956564][T23409] ping (23409) used greatest stack depth: 23072 bytes left