Directed Broadcasts and UDP Forwarding

When I tested this on GNS3 with 15.5(2)XB I only get a translation from 155.1.45.255 to the broadcast address on the receiving interfaces i.e. G0/0.45 and nothing making it over to R8.

 

IP: s=155.1.45.4 (GigabitEthernet0/0.45), d=255.255.255.255, len 100, input feature

    ICMP type=8, code=0, MCI Check(108), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

FIBipv4-packet-proc: route packet from GigabitEthernet0/0.45 src 155.1.45.4 dst 255.255.255.255

FIBfwd-proc: Default:255.255.255.255/32 receive entry

FIBipv4-packet-proc: packet routing failed

IP: s=155.1.45.4 (GigabitEthernet0/0.45), d=255.255.255.255, len 100, rcvd 2

    ICMP type=8, code=0

IP: s=155.1.45.4 (GigabitEthernet0/0.45), d=255.255.255.255, len 100, stop process pak for forus packet

    ICMP type=8, code=0

IP: s=155.1.45.4 (GigabitEthernet0/0.45), d=255.255.255.255

R5(config)#, len 100, enqueue feature

    ICMP type=8, code=0, TCP Adjust MSS(5), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

FIBipv4-packet-proc: route packet from (local) src 155.1.45.5 dst 155.1.45.4

FIBfwd-proc: packet routed by adj to GigabitEthernet0/0.45 155.1.45.4

FIBipv4-packet-proc: packet routing succeeded

IP: s=155.1.45.5 (local), d=155.1.45.4 (GigabitEthernet0/0.45), len 100, sending

    ICMP type=0, code=0

IP: s=155.1.45.5 (local), d=155.1.45.4 (GigabitEthernet0/0.45), len 100, sending full packet

    ICMP type=0, code=0

 

R5(config)#



When I set up a ping to 155.1.58.255 R8 replies.


R8#

IP: s=155.1.45.4 (GigabitEthernet0/0.58), d=155.1.58.255, len 100, input feature

    ICMP type=8, code=0, MCI Check(108), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE

FIBipv4-packet-proc: route packet from GigabitEthernet0/0.58 src 155.1.45.4 dst 155.1.58.255

FIBfwd-proc: Default:155.1.58.255/32 receive entry

FIBipv4-packet-proc: packet routing failed

IP: tableid=0, s=155.1.45.4 (GigabitEthernet0/0.58), d=155.1.58.255 (GigabitEthernet0/0.58), routed via RIB

IP: s=155.1.45.4 (GigabitEthernet0/0.58), d=155.1.58.255 (GigabitEthernet0/0.58), len 100, rcvd 3

    ICMP type=8, code=0

IP: s=155.1.45.4 (GigabitEthernet0/0.58), d=155.1.58.255

R8#, len 100, stop process pak for forus packet

    ICMP type=8, code=0

FIBipv4-packet-proc: route packet from (local) src 155.1.58.8 dst 155.1.45.4

FIBfwd-proc: packet routed by adj to GigabitEthernet0/0.58 155.1.58.5

FIBipv4-packet-proc: packet routing succeeded

IP: s=155.1.58.8 (local), d=155.1.45.4 (GigabitEthernet0/0.58), len 100, sending

    ICMP type=0, code=0

IP: s=155.1.58.8 (local), d=155.1.45.4 (GigabitEthernet0/0.58), len 100, sending full packet

    ICMP type=0, code=0

R8#




Any ideas how to make this work even though the documenation for 15.5 is the same as the solution?
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