[ 1725.658614][T11298] gre: GRE over IPv4 demultiplexer driver
[ 1726.142313][T11321] ip_gre: GRE over IPv4 tunneling driver
[ 1742.772001][T11894] ip6_gre: GRE over IPv6 tunneling driver
[ 1750.774167][T12241] ping (12241) used greatest stack depth: 23136 bytes left
[ 1753.689577][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1755.737546][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1757.657550][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1759.768543][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!