[ 4372.115973][T28605] gre: GRE over IPv4 demultiplexer driver
[ 4373.806725][T28628] ip_gre: GRE over IPv4 tunneling driver
[ 4423.779003][T29199] ip6_gre: GRE over IPv6 tunneling driver
[ 4445.573840][T29448] ping (29448) used greatest stack depth: 22928 bytes left
[ 4458.858562][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4463.850432][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.074449][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4473.002468][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!