[ 4397.249553][T21593] gre: GRE over IPv4 demultiplexer driver
[ 4399.035029][T21616] ip_gre: GRE over IPv4 tunneling driver
[ 4448.614433][T22187] ip6_gre: GRE over IPv6 tunneling driver
[ 4469.620001][T22440] ping (22440) used greatest stack depth: 23440 bytes left
[ 4482.388844][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4487.251735][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4491.412726][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4496.275769][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4670.199863][T24718] ping (24718) used greatest stack depth: 23008 bytes left