<p>I want to manually delete iptables rules for debugging. 
I have several rules created by kube-proxy based on service <code>nettools</code>:</p>

<pre><code># kubectl get endpoints nettools
NAME       ENDPOINTS            AGE
nettools   172.16.27.138:7493   1h
</code></pre>

<p>And its iptables rules：</p>

<pre><code># iptables-save|grep nettools
-A KUBE-SEP-6DFMUWHMXOYMFWKG -s 172.16.27.138/32 -m comment --comment "default/nettools:web" -j KUBE-MARK-MASQ
-A KUBE-SEP-6DFMUWHMXOYMFWKG -p tcp -m comment --comment "default/nettools:web" -m tcp -j DNAT --to-destination 172.16.27.138:7493
-A KUBE-SERVICES -d 10.0.1.2/32 -p tcp -m comment --comment "default/nettools:web cluster IP" -m tcp --dport 7493 -j KUBE-SVC-INDS3KD6I5PFKUWF
-A KUBE-SVC-INDS3KD6I5PFKUWF -m comment --comment "default/nettools:web" -j KUBE-SEP-6DFMUWHMXOYMFWKG
</code></pre>

<p>However，I cannot delete those rules:</p>

<pre><code># iptables -D  KUBE-SVC-INDS3KD6I5PFKUWF -m comment --comment "default/nettools:web" -j KUBE-SEP-6DFMUWHMXOYMFWKG
iptables v1.4.21: Couldn't load target `KUBE-SEP-6DFMUWHMXOYMFWKG':No such file or directory
# iptables -D KUBE-SERVICES -d 10.0.1.2/32 -p tcp -m comment --comment "default/nettools:web cluster IP" -m tcp --dport 7493 -j KUBE-SVC-INDS3KD6I5PFKUWF
iptables v1.4.21: Couldn't load target `KUBE-SVC-INDS3KD6I5PFKUWF':No such file or directory
</code></pre>

<p>There are multiple tables in play when dealing with <code>iptables</code>. <code>filter</code> table is the default if nothing is specified. The rules that you are trying to delete are part of the <code>nat</code> table.</p>

<p>Just add <code>-t nat</code> to your rules to delete those rules.</p>

<p>Example:</p>

<pre><code># iptables -t nat -D KUBE-SVC-INDS3KD6I5PFKUWF -m comment --comment "default/nettools:web" -j KUBE-SEP-6DFMUWHMXOYMFWKG
</code></pre>
