[ 4493.170851][T21576] gre: GRE over IPv4 demultiplexer driver
[ 4494.832351][T21599] ip_gre: GRE over IPv4 tunneling driver
[ 4546.289591][T22176] ip6_gre: GRE over IPv6 tunneling driver
[ 4560.262061][T22331] ping (22331) used greatest stack depth: 23696 bytes left
[ 4581.711013][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4586.766936][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4591.246941][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4596.366931][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!