[ 1718.800445][T11784] gre: GRE over IPv4 demultiplexer driver
[ 1719.312699][T11807] ip_gre: GRE over IPv4 tunneling driver
[ 1735.931942][T12378] ip6_gre: GRE over IPv6 tunneling driver
[ 1740.676661][T12577] ping (12577) used greatest stack depth: 22752 bytes left
[ 1746.822908][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1748.934860][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1750.855870][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1752.903874][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!