[Bug 570] New: PREROUTING is unaware of VLAN interfaces

[bugzilla-daemon at bugzilla.netfilter.org]

https://bugzilla.netfilter.org/bugzilla/show_bug.cgi?id=570

           Summary: PREROUTING is unaware of VLAN interfaces
           Product: netfilter/iptables
           Version: linux-2.6.x
          Platform: i386
        OS/Version: Fedora
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ip_tables (kernel)
        AssignedTo: laforge at netfilter.org
        ReportedBy: rolf.fokkens at wanadoo.nl


When forwarding packets from a VLAN interface (e.g. br1.25) to another (e.g.
br0) the PREROUTING is unaware of VLAN interfaces as shown by the following
syslog entries:

mangle-prerouting:IN=br1 OUT= PHYSIN=eth1 MAC=... SRC=192.168.25.2 DST=81.18.1.1
LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=13574 SEQ=2 
nat-prerouting:IN=br1 OUT= PHYSIN=eth1 MAC=... SRC=192.168.25.2 DST=81.18.1.1
LEN=84 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=13574 SEQ=2 
mangle-forward:IN=br1.25 OUT=br0 PHYSIN=eth1 SRC=192.168.25.2 DST=81.18.1.1
LEN=84 TOS=0x00 PREC=0x00 TTL=63 ID=0 DF PROTO=ICMP TYPE=8 CODE=0 ID=13574 SEQ=2

The above logging is the result of:
iptables -t nat -I PREROUTING -j LOG --log-prefix "nat-prerouting:"
iptables -t mangle -I PREROUTING -j LOG --log-prefix "mangle-prerouting:"
iptables -t mangle -I FORWARD -j LOG --log-prefix "mangle-forward:"

Fedora kernel is 2.6.20-1.2948.fc6

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