Error adding iptables snat or dnat rules in linux

I am using Arch Linux (the 32 bit version) on a Raspberry Pi 3.

When I attempt to add any -j SNAT or -j DNAT rules to iptables, it doesn't work - I receive an error

iptables: No change/target/match by that name

I don't normally have a problem with iptables. For example, the standard INPUT, OUTPUT and FORWARD have plenty of rules. Also, POSTROUTING contains a MASQUERADE rule which is working fine to allow the internal LAN to talk to the internet.

I encountered the SNAT problem while trying to allow internet to send traffic to the public IP to get to a machine on the internal network. When this did not work, I then tried simpler rules and they did not work either. Then I tried to add DNAT rules and had the same problem.

I can add my more complex rules to the PREROUTING and POSTROUTING without specifying the -j DNAT or -j SNAT and then they will add, and the counters will increment.

Below are some examples of the simplest attempts at adding -j SNAT and -j DNAT rules and the errors. No matter what SNAT or DNAT rule I try to add, the error is always the same as that shown below.

[root@hostname ~]# iptables -F PREROUTING -t nat
[root@hostname ~]# iptables -A PREROUTING -t nat -d $public_IP -j DNAT --to-destination $internal_IP
iptables: No chain/target/match by that name.

[root@hostname ~]# iptables -F POSTROUTING -t nat
[root@hostname ~]# iptables -A POSTROUTING -t nat -o teql+ -j SNAT --to-source $public_IP
iptables: No chain/target/match by that name.

Linux details and current -t nat configuration:

[root@hostname ~]# uname -a
Linux hostname.local 4.4.37-1-ARCH #1 SMP Fri Dec 9 19:03:41 MST 2016 armv7l GNU/Linux

[root@hostname ~]# iptables -nvL -t nat
Chain PREROUTING (policy ACCEPT 18 packets, 1184 bytes)
pkts bytes target     prot opt in     out     source               destination

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target     prot opt in     out     source               destination

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target     prot opt in     out     source               destination

Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target     prot opt in     out     source               destination
600 37155 MASQUERADE  all  --  *      teql+   0.0.0.0/0            0.0.0.0/0
[root@hostname ~]#

Here is a list of loaded Kernel modules that maybe relevant in case it helps:

[root@hostname ~]# lsmod | grep ip
ipt_REJECT              1543  142
nf_reject_ipv4          3223  1 ipt_REJECT
ipt_MASQUERADE          1223  1
nf_nat_masquerade_ipv4  2893  1 ipt_MASQUERADE
iptable_nat             1812  1
nf_nat_ipv4             5573  1 iptable_nat
nf_nat                 15506  2 nf_nat_ipv4,nf_nat_masquerade_ipv4
nf_conntrack_ipv4      13768  7
nf_defrag_ipv4          1684  1 nf_conntrack_ipv4
nf_conntrack          101220  5 nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_ipv4
iptable_filter          1665  1
ip_tables              12280  2 iptable_filter,iptable_nat
x_tables               17670  5 ip_tables,ipt_MASQUERADE,xt_conntrack,iptable_filter,ipt_REJECT
ipv6                  370087  20