[ 4178.058927][T29250] gre: GRE over IPv4 demultiplexer driver
[ 4179.696234][T29273] ip_gre: GRE over IPv4 tunneling driver
[ 4228.892699][T29845] ip6_gre: GRE over IPv6 tunneling driver
[ 4253.149496][T30143] ping (30143) used greatest stack depth: 23280 bytes left
[ 4262.689614][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4267.553510][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4271.777547][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4276.705523][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4453.313510][T32474] ping (32474) used greatest stack depth: 23168 bytes left