Description of Problem:
Some firewall rules are subtly altered by iptables-save. Notably, interface
names such as ppp+ become simply ppp, and --reject-with
icmp-port-unreachable becomes --reject-with icmp-proto-unreachable

How Reproducible:
always

Steps to Reproduce:
1. iptables -N TEST_CHAIN && iptables -A TEST_CHAIN -i ppp+ -j REJECT
--reject-with icmp-port-unreachable
2. iptables-save | fgrep TEST_CHAIN
3. iptables -F TEST_CHAIN && iptables -X TEST_CHAIN

Actual Results:
:TEST_CHAIN - [0:0]
-A TEST_CHAIN -i ppp -j REJECT --reject-with icmp-proto-unreachable 

Expected Results:
:TEST_CHAIN - [0:0]
-A TEST_CHAIN -i ppp+ -j REJECT --reject-with icmp-port-unreachable 

Additional Information:
iptables-1.2.1a-1 and kernel 2.4.5 (not the pristine RedHat kernel), but
this is probably irrelevant