[CentOS] custom iptables chain jumping

Hi all,
When we create a custom chain in iptables, should we specifically create a 
rule to 'jump back' to the previous chain?

For example:
iptables -A INPUT -j CUSTOMCHAIN
iptables -A CUSTOMCHAIN rule1
iptables -A CUSTOMCHAIN rule2

Should we add:
iptables -A CUSTOMCHAIN -j INPUT ? Or, it will automatically go back to CHAIN 
when there's no more rule?

Thank you very much,
-- 
Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial 
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