[ 1448.520450][T11889] gre: GRE over IPv4 demultiplexer driver
[ 1448.957567][T11912] ip_gre: GRE over IPv4 tunneling driver
[ 1460.151014][T12382] ip (12382) used greatest stack depth: 23800 bytes left
[ 1464.172434][T12484] ip6_gre: GRE over IPv6 tunneling driver
[ 1474.116161][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1476.036128][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1477.891122][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1479.875137][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!