[ 1508.888735][T28463] gre: GRE over IPv4 demultiplexer driver
[ 1509.312452][T28486] ip_gre: GRE over IPv4 tunneling driver
[ 1524.860117][T29058] ip6_gre: GRE over IPv6 tunneling driver
[ 1530.342857][T29308] ping (29308) used greatest stack depth: 23336 bytes left
[ 1535.205639][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1537.189610][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1539.044617][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1541.092619][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1563.978027][T30534] ping (30534) used greatest stack depth: 23232 bytes left