[ 1652.295255][T24629] gre: GRE over IPv4 demultiplexer driver
[ 1652.805063][T24652] ip_gre: GRE over IPv4 tunneling driver
[ 1658.276371][T24904] ping (24904) used greatest stack depth: 22944 bytes left
[ 1668.540647][T25223] ip6_gre: GRE over IPv6 tunneling driver
[ 1678.792313][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1680.775283][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1682.632277][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1684.615280][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!