How To Capture Packets That Was Forwarded

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hello, the topology is like this:

CentOS v0:eth1 <------> CentOS v0: eth2
fc00:2:3:4::1 fc00:2:3::4

i turned the packet forwarding

ping6 -i eth2 fc00:2:3:4::1
the output is

PING fc00:2:3:4::1(fc00:2:3:4::1) from fc00:2:3::5 eth2: 56 data bytes prohibited prohibited prohibited prohibited

why the box do not forwarding icmp packets to eth2?
and how to set forwarding rules on CentOS 6.3?
Thanks

2 thoughts on - How To Capture Packets That Was Forwarded

  • Hi Jaze

    If you are talking about forwarding on CentOS V0, forwarding will have no effect here. You appear to be trying to ping eth1 from a box somewhere on eth2’s network. This is still classed as an input to V0 and will be handled by the INPUT
    chain.

    Administratively prohibited looks like a firewall issue. Check your IPv6 firewall settings on V0

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