[ 4424.297386][T26188] gre: GRE over IPv4 demultiplexor driver
[ 4426.333966][T26211] ip_gre: GRE over IPv4 tunneling driver
[ 4485.977291][T26784] ip6_gre: GRE over IPv6 tunneling driver
[ 4493.312253][T26845] ping (26845) used greatest stack depth: 23320 bytes left
[ 4512.559106][T27034] ping (27034) used greatest stack depth: 23072 bytes left
[ 4528.063773][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4533.823683][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4538.623685][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4544.383708][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!