[ 4435.616870][T22403] gre: GRE over IPv4 demultiplexor driver
[ 4437.644645][T22426] ip_gre: GRE over IPv4 tunneling driver
[ 4497.214031][T22998] ip6_gre: GRE over IPv6 tunneling driver
[ 4533.711119][T23342] ping (23342) used greatest stack depth: 21880 bytes left
[ 4539.667173][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4545.619130][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4550.675092][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4556.562103][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!