[ 3925.006363][T20070] gre: GRE over IPv4 demultiplexor driver
[ 3926.969758][T20093] ip_gre: GRE over IPv4 tunneling driver
[ 3930.315593][T20136] ip (20136) used greatest stack depth: 23504 bytes left
[ 3987.208777][T20666] ip6_gre: GRE over IPv6 tunneling driver
[ 4029.865936][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4035.882815][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4041.001811][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4047.081898][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!