[ 4376.468826][T29684] gre: GRE over IPv4 demultiplexer driver
[ 4378.221062][T29708] ip_gre: GRE over IPv4 tunneling driver
[ 4431.367220][T30288] ip6_gre: GRE over IPv6 tunneling driver
[ 4449.520029][T30487] ping (30487) used greatest stack depth: 23648 bytes left
[ 4467.722676][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4472.907425][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4477.707422][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4482.890441][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4557.685441][T31668] ping (31668) used greatest stack depth: 23536 bytes left