Hi,
I''ve just setup my first Linux router and have run into a problem with
the from source prefix when using `ip rule`.
If I set a from source prefix in my ip rules the two networks can see
each other but the Linux router itself can
only ping 1 network.
/etc/iproute2/rt_tables
255 local
254 main
253 default
0 unspec
1 inr.ruhep
100 implan
200 inet
Here I set up two NICs:
ip addr add 192.168.2.7/24 dev eth0 brd +
ip addr add 192.168.3.7/24 dev eth1 brd +
Here I set up two routes:
ip route add default via 192.168.2.1 proto static table inet
ip route add 192.168.3/24 via 192.168.3.7 proto static table implan
Here I set up two rules:
ip rule add from 192.168.0.0/16 to 192.168.3/24 prio 16000 table implan
ip rule add from 192.168.2.0/24 to 0/0 prio 17000 table inet
Here set up forwarding
echo "1" > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
The only way I can get the two networks to see each other and the router
able to
see 2 networks is to remove reference to the from source prefix in the
ip rule like so
ip rule add to 192.168.3/24 prio 16000 table implan
ip rule add to 0/0 prio 17000 table inet
It''s the same rule with now reference to the from source prefix.
Can you help explain how I set the from source prefix so the the two
networks and the router
can all see/ping each other.
I hope I explain that OK.
Many thanks.
Kind regards,
Rudi.
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