[ 1308.537532][T22223] gre: GRE over IPv4 demultiplexer driver
[ 1309.060512][T22246] ip_gre: GRE over IPv4 tunneling driver
[ 1325.048558][T22819] ip6_gre: GRE over IPv6 tunneling driver
[ 1329.542564][T23018] ping (23018) used greatest stack depth: 23312 bytes left
[ 1335.594673][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1337.578625][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1339.435627][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1341.482635][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!