[ 4399.336405][T21938] gre: GRE over IPv4 demultiplexer driver
[ 4400.956165][T21961] ip_gre: GRE over IPv4 tunneling driver
[ 4421.271066][T22213] ping (22213) used greatest stack depth: 23096 bytes left
[ 4448.769115][T22539] ip6_gre: GRE over IPv6 tunneling driver
[ 4481.785369][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4486.585243][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4490.681278][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4495.544257][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!