[ 4198.840454][T20964] gre: GRE over IPv4 demultiplexor driver
[ 4200.426240][T20987] ip_gre: GRE over IPv4 tunneling driver
[ 4248.001498][T21560] ip6_gre: GRE over IPv6 tunneling driver
[ 4268.645523][T20756] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4275.644465][T21903] ping (21903) used greatest stack depth: 23440 bytes left
[ 4280.740185][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4285.604207][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4289.893195][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4294.628186][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!